diff --git a/backend/alembic/versions/013_host_inventory.py b/backend/alembic/versions/013_host_inventory.py
new file mode 100644
index 0000000..1b0069a
--- /dev/null
+++ b/backend/alembic/versions/013_host_inventory.py
@@ -0,0 +1,26 @@
+"""host inventory JSONB
+
+Revision ID: 013
+Revises: 012
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects.postgresql import JSONB
+
+revision: str = "013"
+down_revision: Union[str, None] = "012"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.add_column("hosts", sa.Column("inventory", JSONB, nullable=True))
+    op.add_column("hosts", sa.Column("inventory_updated_at", sa.DateTime(timezone=True), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column("hosts", "inventory_updated_at")
+    op.drop_column("hosts", "inventory")
diff --git a/backend/app/api/v1/hosts.py b/backend/app/api/v1/hosts.py
index f0fe294..16ac09c 100644
--- a/backend/app/api/v1/hosts.py
+++ b/backend/app/api/v1/hosts.py
@@ -7,7 +7,7 @@ from app.auth.jwt_auth import get_current_user, require_admin
 from app.config import get_settings
 from app.database import get_db
 from app.models import Event, Host
-from app.schemas.list_models import HostListResponse, HostSummary
+from app.schemas.list_models import HostDetail, HostListResponse, HostSummary
 from app.services.host_delete import delete_host_and_related
 from app.services.host_health import (
     HEARTBEAT_TYPE,
@@ -63,6 +63,7 @@ def list_hosts(
                 hostname=host.hostname,
                 display_name=host.display_name,
                 os_family=host.os_family,
+                os_version=host.os_version,
                 product=host.product,
                 product_version=host.product_version,
                 ipv4=host.ipv4,
@@ -70,6 +71,7 @@ def list_hosts(
                 event_count=int(event_count or 0),
                 last_heartbeat_at=last_hb,
                 last_daily_report_at=report_map.get(host.id),
+                last_inventory_at=host.inventory_updated_at,
                 agent_status=agent_status(
                     last_hb, stale_minutes=settings.sac_heartbeat_stale_minutes
                 ),
@@ -79,6 +81,56 @@ def list_hosts(
     return HostListResponse(items=items, total=total, page=page, page_size=page_size)
 
 
+def _host_detail_from_model(
+    host: Host,
+    *,
+    db: Session,
+    settings,
+) -> HostDetail:
+    hb_map = max_event_time_by_host(db, HEARTBEAT_TYPE)
+    report_map = max_daily_report_time_by_host(db)
+    event_count = db.scalar(
+        select(func.count()).select_from(Event).where(Event.host_id == host.id)
+    )
+    last_hb = hb_map.get(host.id)
+    return HostDetail(
+        id=host.id,
+        hostname=host.hostname,
+        display_name=host.display_name,
+        os_family=host.os_family,
+        os_version=host.os_version,
+        product=host.product,
+        product_version=host.product_version,
+        ipv4=host.ipv4,
+        ipv6=host.ipv6,
+        last_seen_at=host.last_seen_at,
+        event_count=int(event_count or 0),
+        last_heartbeat_at=last_hb,
+        last_daily_report_at=report_map.get(host.id),
+        last_inventory_at=host.inventory_updated_at,
+        agent_status=agent_status(last_hb, stale_minutes=settings.sac_heartbeat_stale_minutes),
+        agent_instance_id=host.agent_instance_id,
+        tags=host.tags if isinstance(host.tags, list) else [],
+        use_sac_mode=host.use_sac_mode,
+        inventory=host.inventory if isinstance(host.inventory, dict) else None,
+        inventory_updated_at=host.inventory_updated_at,
+        created_at=host.created_at,
+    )
+
+
+@router.get("/{host_id}", response_model=HostDetail)
+def get_host(
+    host_id: int,
+    db: Session = Depends(get_db),
+    _user: str = Depends(get_current_user),
+) -> HostDetail:
+    host = db.get(Host, host_id)
+    if host is None:
+        raise HTTPException(status_code=404, detail="Host not found")
+    settings = get_settings()
+    return _host_detail_from_model(host, db=db, settings=settings)
+
+
 class HostDeleteResponse(BaseModel):
     status: str
     host_id: int
diff --git a/backend/app/constants/event_types.py b/backend/app/constants/event_types.py
index 9764793..33abcf0 100644
--- a/backend/app/constants/event_types.py
+++ b/backend/app/constants/event_types.py
@@ -6,6 +6,7 @@ DEFAULT_EVENT_SEVERITIES: dict[str, str] = {
     # Agent / lifecycle
     "agent.heartbeat": "info",
     "agent.lifecycle": "info",
+    "agent.inventory": "info",
     "agent.test": "info",
     "agent.recovered": "info",
     # SSH
diff --git a/backend/app/models/host.py b/backend/app/models/host.py
index 39318a5..19097d8 100644
--- a/backend/app/models/host.py
+++ b/backend/app/models/host.py
@@ -21,6 +21,8 @@ class Host(Base):
     ipv4: Mapped[str | None] = mapped_column(String(45))
     ipv6: Mapped[str | None] = mapped_column(String(45))
     tags: Mapped[list | None] = mapped_column(JSONB, default=list)
+    inventory: Mapped[dict | None] = mapped_column(JSONB)
+    inventory_updated_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
     use_sac_mode: Mapped[str | None] = mapped_column(String(32))
     last_seen_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
diff --git a/backend/app/schemas/list_models.py b/backend/app/schemas/list_models.py
index 280027b..bfb3589 100644
--- a/backend/app/schemas/list_models.py
+++ b/backend/app/schemas/list_models.py
@@ -8,6 +8,7 @@ class HostSummary(BaseModel):
     hostname: str
     display_name: str | None
     os_family: str
+    os_version: str | None = None
     product: str
     product_version: str | None
     ipv4: str | None
@@ -15,11 +16,22 @@ class HostSummary(BaseModel):
     event_count: int | None = None
     last_heartbeat_at: datetime | None = None
     last_daily_report_at: datetime | None = None
+    last_inventory_at: datetime | None = None
     agent_status: str = "unknown"
 
     model_config = {"from_attributes": True}
 
 
+class HostDetail(HostSummary):
+    agent_instance_id: str | None = None
+    ipv6: str | None = None
+    tags: list | None = None
+    use_sac_mode: str | None = None
+    inventory: dict | None = None
+    inventory_updated_at: datetime | None = None
+    created_at: datetime | None = None
+
+
 class HostListResponse(BaseModel):
     items: list[HostSummary]
     total: int
@@ -33,6 +45,7 @@ class EventSummary(BaseModel):
     host_id: int
     hostname: str
     display_name: str | None = None
+    product_version: str | None = None
     occurred_at: datetime
     received_at: datetime
     category: str
diff --git a/backend/app/services/event_summary.py b/backend/app/services/event_summary.py
index 7d1c768..8a9bd67 100644
--- a/backend/app/services/event_summary.py
+++ b/backend/app/services/event_summary.py
@@ -10,6 +10,7 @@ def event_to_summary(event: Event) -> EventSummary:
         host_id=event.host_id,
         hostname=host.hostname,
         display_name=host.display_name,
+        product_version=host.product_version,
         occurred_at=event.occurred_at,
         received_at=event.received_at,
         category=event.category,
diff --git a/backend/app/services/host_inventory.py b/backend/app/services/host_inventory.py
new file mode 100644
index 0000000..2b0ec6b
--- /dev/null
+++ b/backend/app/services/host_inventory.py
@@ -0,0 +1,162 @@
+"""Host hardware/software inventory from agent.inventory ingest."""
+
+from __future__ import annotations
+
+import hashlib
+import json
+from datetime import datetime, timezone
+from typing import Any
+
+from app.models import Host
+
+INVENTORY_EVENT_TYPE = "agent.inventory"
+
+
+def _as_dict(value: Any) -> dict[str, Any]:
+    return value if isinstance(value, dict) else {}
+
+
+def _as_list(value: Any) -> list[Any]:
+    return value if isinstance(value, list) else []
+
+
+def _round_gb(value: Any) -> float | None:
+    try:
+        return round(float(value), 2)
+    except (TypeError, ValueError):
+        return None
+
+
+def extract_inventory_payload(details: dict | None) -> dict[str, Any] | None:
+    if not isinstance(details, dict):
+        return None
+    inv = details.get("inventory")
+    return inv if isinstance(inv, dict) else None
+
+
+def hardware_snapshot(inventory: dict[str, Any]) -> dict[str, Any]:
+    processors: list[tuple[str, int | None, int | None]] = []
+    for item in _as_list(inventory.get("processor")):
+        row = _as_dict(item)
+        name = str(row.get("name") or "").strip()
+        if not name:
+            continue
+        cores = row.get("cores")
+        logical = row.get("logical_processors")
+        try:
+            cores_i = int(cores) if cores is not None else None
+        except (TypeError, ValueError):
+            cores_i = None
+        try:
+            logical_i = int(logical) if logical is not None else None
+        except (TypeError, ValueError):
+            logical_i = None
+        processors.append((name, cores_i, logical_i))
+    processors.sort()
+
+    motherboard = _as_dict(inventory.get("motherboard"))
+    mobo_product = str(motherboard.get("product") or "").strip()
+
+    memory_gb = _round_gb(inventory.get("memory_gb"))
+
+    disks: list[tuple[str, float | None, str]] = []
+    for item in _as_list(inventory.get("disks")):
+        row = _as_dict(item)
+        friendly = str(row.get("friendly_name") or "").strip()
+        media = str(row.get("media_type") or "").strip()
+        size_gb = _round_gb(row.get("size_gb"))
+        if friendly:
+            disks.append((friendly, size_gb, media))
+    disks.sort()
+
+    video: list[str] = sorted(
+        {
+            str(_as_dict(item).get("name") or "").strip()
+            for item in _as_list(inventory.get("video"))
+            if str(_as_dict(item).get("name") or "").strip()
+        }
+    )
+
+    return {
+        "processor": processors,
+        "motherboard_product": mobo_product,
+        "memory_gb": memory_gb,
+        "disks": disks,
+        "video": video,
+    }
+
+
+def _format_change(field: str, old: Any, new: Any) -> dict[str, Any]:
+    return {"field": field, "old": old, "new": new}
+
+
+def diff_hardware(old: dict[str, Any] | None, new: dict[str, Any]) -> list[dict[str, Any]]:
+    if not old:
+        return []
+    prev = hardware_snapshot(old)
+    curr = hardware_snapshot(new)
+    changes: list[dict[str, Any]] = []
+
+    if prev["processor"] != curr["processor"]:
+        changes.append(_format_change("processor", prev["processor"], curr["processor"]))
+    if prev["motherboard_product"] != curr["motherboard_product"]:
+        changes.append(
+            _format_change("motherboard", prev["motherboard_product"], curr["motherboard_product"])
+        )
+    if prev["memory_gb"] != curr["memory_gb"]:
+        changes.append(_format_change("memory_gb", prev["memory_gb"], curr["memory_gb"]))
+    if prev["disks"] != curr["disks"]:
+        changes.append(_format_change("disks", prev["disks"], curr["disks"]))
+    if prev["video"] != curr["video"]:
+        changes.append(_format_change("video", prev["video"], curr["video"]))
+    return changes
+
+
+def inventory_fingerprint(inventory: dict[str, Any]) -> str:
+    snap = hardware_snapshot(inventory)
+    raw = json.dumps(snap, sort_keys=True, ensure_ascii=False, default=str)
+    return hashlib.sha256(raw.encode("utf-8")).hexdigest()[:16]
+
+
+def apply_os_version_from_inventory(host: Host, inventory: dict[str, Any]) -> None:
+    windows = _as_dict(inventory.get("windows"))
+    product = str(windows.get("product_name") or "").strip()
+    version = str(windows.get("version") or "").strip()
+    if product and version:
+        host.os_version = f"{product} ({version})"
+    elif product:
+        host.os_version = product
+    elif version:
+        host.os_version = version
+
+
+def process_inventory_ingest(
+    host: Host,
+    details: dict | None,
+) -> tuple[str, list[dict[str, Any]], dict[str, Any] | None]:
+    """
+    Update host.inventory from agent.inventory details.
+
+    Returns (severity, hardware_changes, merged_details_patch).
+    severity is warning when hardware changed, else info.
+    """
+    inventory = extract_inventory_payload(details)
+    if inventory is None:
+        return "info", [], None
+
+    previous = host.inventory if isinstance(host.inventory, dict) else None
+    changes = diff_hardware(previous, inventory)
+    now = datetime.now(timezone.utc)
+    host.inventory = inventory
+    host.inventory_updated_at = now
+    apply_os_version_from_inventory(host, inventory)
+
+    patch: dict[str, Any] = {
+        "inventory_fingerprint": inventory_fingerprint(inventory),
+        "first_inventory": previous is None,
+    }
+    if changes:
+        patch["hardware_changes"] = changes
+
+    severity = "warning" if changes else "info"
+    return severity, changes, patch
diff --git a/backend/app/services/ingest.py b/backend/app/services/ingest.py
index 087416e..be50f76 100644
--- a/backend/app/services/ingest.py
+++ b/backend/app/services/ingest.py
@@ -7,6 +7,7 @@ from sqlalchemy.orm import Session
 from app.models import Event, Host
 from app.services.daily_report_format import normalize_daily_report_details
 from app.services.event_severity_overrides import apply_severity_override
+from app.services.host_inventory import INVENTORY_EVENT_TYPE, process_inventory_ingest
 
 DAILY_REPORT_TYPES = frozenset({"report.daily.ssh", "report.daily.rdp"})
 
@@ -80,15 +81,33 @@ def ingest_event(db: Session, payload: dict) -> tuple[Event, bool]:
     details = payload.get("details")
     if payload.get("type") in DAILY_REPORT_TYPES:
         details = normalize_daily_report_details(details, host, payload["type"])
+
+    severity = payload["severity"]
+    title = payload["title"]
+    summary = payload["summary"]
+    if payload.get("type") == INVENTORY_EVENT_TYPE:
+        inv_severity, hw_changes, inv_patch = process_inventory_ingest(host, details)
+        severity = inv_severity
+        if inv_patch:
+            merged = dict(details) if isinstance(details, dict) else {}
+            merged.update(inv_patch)
+            details = merged
+        if hw_changes:
+            change_fields = ", ".join(c["field"] for c in hw_changes)
+            title = f"Hardware inventory changed on {host.hostname}"
+            summary = (
+                f"Изменилось железо на {host.display_name or host.hostname}: {change_fields}"
+            )
+
     event = Event(
         event_id=event_id,
         host_id=host.id,
         occurred_at=_parse_dt(payload["occurred_at"]),
         category=payload["category"],
         type=payload["type"],
-        severity=payload["severity"],
-        title=payload["title"],
-        summary=payload["summary"],
+        severity=severity,
+        title=title,
+        summary=summary,
         details=details,
         raw=payload.get("raw"),
         dedup_key=payload.get("dedup_key"),
diff --git a/backend/app/services/telegram_templates.py b/backend/app/services/telegram_templates.py
index 8a3e2ff..e628aa0 100644
--- a/backend/app/services/telegram_templates.py
+++ b/backend/app/services/telegram_templates.py
@@ -333,6 +333,50 @@ def format_smb_admin_share_html(event: Event) -> str:
     return msg.rstrip()
 
 
+def _format_inventory_change_line(change: dict[str, Any]) -> str:
+    field = html_escape(str(change.get("field") or "?"))
+    old = change.get("old")
+    new = change.get("new")
+    return f"• <b>{field}</b>: {html_escape(old)} → {html_escape(new)}"
+
+
+def format_agent_inventory_html(event: Event) -> str:
+    details = _details_dict(event)
+    changes = details.get("hardware_changes")
+    if isinstance(changes, list) and changes:
+        msg = "<b>⚠️ Изменилось железо хоста</b>\n"
+        msg += _line("🏢", "Хост", host_label(event.host))
+        msg += _line("🕐", "Время", format_time(event.occurred_at))
+        msg += "\n"
+        for item in changes:
+            if isinstance(item, dict):
+                msg += _format_inventory_change_line(item) + "\n"
+        if event.summary:
+            msg += f"\n{html_escape(event.summary)}"
+        return msg.rstrip()
+
+    inv = details.get("inventory")
+    if not isinstance(inv, dict):
+        inv = {}
+    msg = "<b>🖥️ Инвентаризация хоста</b>\n"
+    msg += _line("🏢", "Хост", host_label(event.host))
+    windows = inv.get("windows") if isinstance(inv.get("windows"), dict) else {}
+    os_name = windows.get("product_name") or event.host.os_version if event.host else None
+    if os_name:
+        msg += _line("💿", "ОС", html_escape(os_name))
+    mem = inv.get("memory_gb")
+    if mem is not None:
+        msg += _line("🧠", "RAM", f"{html_escape(mem)} GB")
+    procs = inv.get("processor")
+    if isinstance(procs, list) and procs:
+        names = [str(p.get("name") or "").strip() for p in procs if isinstance(p, dict)]
+        names = [n for n in names if n]
+        if names:
+            msg += _line("⚙️", "CPU", html_escape("; ".join(names)))
+    msg += _line("🕐", "Время", format_time(event.occurred_at))
+    return msg.rstrip()
+
+
 def format_generic_event_html(event: Event) -> str:
     sev = event.severity.upper()
     msg = f"<b>🚨 SAC: {html_escape(event.title)}</b>\n"
@@ -453,6 +497,8 @@ def _format_event_body_html(event: Event) -> str:
         return format_winrm_session_html(event)
     if event.type.startswith("smb."):
         return format_smb_admin_share_html(event)
+    if event.type == "agent.inventory":
+        return format_agent_inventory_html(event)
     return format_generic_event_html(event)
 
 
diff --git a/backend/app/version.py b/backend/app/version.py
index a6bdddc..1b795ba 100644
--- a/backend/app/version.py
+++ b/backend/app/version.py
@@ -1,5 +1,5 @@
 """Единый источник версии SAC (API, health, логи, OpenAPI)."""
 
 APP_NAME = "Security Alert Center"
-APP_VERSION = "0.7.4"
+APP_VERSION = "0.7.5"
 APP_VERSION_LABEL = f"{APP_NAME} v.{APP_VERSION}"
diff --git a/backend/tests/test_host_inventory.py b/backend/tests/test_host_inventory.py
new file mode 100644
index 0000000..e8f0d8a
--- /dev/null
+++ b/backend/tests/test_host_inventory.py
@@ -0,0 +1,132 @@
+"""Host inventory ingest and API."""
+
+import uuid
+from datetime import datetime, timezone
+
+from sqlalchemy import select
+
+from app.models import Event, Host
+from app.services.host_inventory import diff_hardware, hardware_snapshot, inventory_fingerprint
+
+
+def test_hardware_diff_detects_memory_change():
+    old = {"memory_gb": 16.0, "processor": [{"name": "CPU A", "cores": 4, "logical_processors": 8}]}
+    new = {"memory_gb": 32.0, "processor": [{"name": "CPU A", "cores": 4, "logical_processors": 8}]}
+    changes = diff_hardware(old, new)
+    assert len(changes) == 1
+    assert changes[0]["field"] == "memory_gb"
+
+
+def test_hardware_diff_ignores_first_snapshot():
+    new = {"memory_gb": 16.0}
+    assert diff_hardware(None, new) == []
+
+
+def test_ingest_inventory_stores_host_and_info(client, auth_headers, db_session):
+    event_id = str(uuid.uuid4())
+    payload = {
+        "schema_version": "1.0",
+        "event_id": event_id,
+        "occurred_at": "2026-06-04T10:00:00+03:00",
+        "source": {"product": "rdp-login-monitor", "product_version": "2.0.21-SAC"},
+        "host": {"hostname": "inv-pc", "os_family": "windows"},
+        "category": "agent",
+        "type": "agent.inventory",
+        "severity": "info",
+        "title": "Host inventory",
+        "summary": "Inventory snapshot",
+        "details": {
+            "inventory": {
+                "schema_version": 1,
+                "computer_name": "INV-PC",
+                "memory_gb": 32.0,
+                "processor": [{"name": "Intel Xeon", "cores": 8, "logical_processors": 16}],
+                "windows": {"product_name": "Windows Server 2019", "version": "1809"},
+            }
+        },
+    }
+    r = client.post("/api/v1/events", json=payload, headers=auth_headers)
+    assert r.status_code == 201
+
+    host = db_session.scalar(select(Host).where(Host.hostname == "inv-pc"))
+    assert host is not None
+    assert host.inventory is not None
+    assert host.inventory["memory_gb"] == 32.0
+    assert host.inventory_updated_at is not None
+    assert host.os_version == "Windows Server 2019 (1809)"
+
+
+def test_ingest_inventory_hardware_change_warning(client, auth_headers, db_session):
+    base = {
+        "schema_version": "1.0",
+        "occurred_at": "2026-06-04T10:00:00+03:00",
+        "source": {"product": "rdp-login-monitor", "product_version": "2.0.21-SAC"},
+        "host": {"hostname": "inv-change", "os_family": "windows"},
+        "category": "agent",
+        "type": "agent.inventory",
+        "severity": "info",
+        "title": "Host inventory",
+        "summary": "Inventory snapshot",
+    }
+    inv_v1 = {
+        "inventory": {
+            "memory_gb": 16.0,
+            "processor": [{"name": "CPU A", "cores": 4, "logical_processors": 8}],
+            "disks": [{"friendly_name": "Disk0", "media_type": "SSD", "size_gb": 500.0}],
+        }
+    }
+    assert (
+        client.post(
+            "/api/v1/events",
+            json={**base, "event_id": str(uuid.uuid4()), "details": inv_v1},
+            headers=auth_headers,
+        ).status_code
+        == 201
+    )
+
+    inv_v2 = {
+        "inventory": {
+            "memory_gb": 32.0,
+            "processor": [{"name": "CPU A", "cores": 4, "logical_processors": 8}],
+            "disks": [{"friendly_name": "Disk0", "media_type": "SSD", "size_gb": 500.0}],
+        }
+    }
+    r = client.post(
+        "/api/v1/events",
+        json={**base, "event_id": str(uuid.uuid4()), "details": inv_v2},
+        headers=auth_headers,
+    )
+    assert r.status_code == 201
+
+    ev = db_session.scalar(select(Event).order_by(Event.id.desc()))
+    assert ev is not None
+    assert ev.severity == "warning"
+    assert ev.details.get("hardware_changes")
+
+
+def test_get_host_detail(client, db_session, jwt_headers):
+    h = Host(
+        hostname="detail-host",
+        display_name="Detail Host",
+        os_family="windows",
+        product="rdp-login-monitor",
+        product_version="2.0.21-SAC",
+        inventory={"memory_gb": 64.0},
+        inventory_updated_at=datetime.now(timezone.utc),
+        last_seen_at=datetime.now(timezone.utc),
+    )
+    db_session.add(h)
+    db_session.commit()
+
+    r = client.get(f"/api/v1/hosts/{h.id}", headers=jwt_headers)
+    assert r.status_code == 200
+    body = r.json()
+    assert body["hostname"] == "detail-host"
+    assert body["inventory"]["memory_gb"] == 64.0
+    assert body["last_inventory_at"] is not None
+
+
+def test_inventory_fingerprint_stable():
+    inv = {"memory_gb": 16.0, "processor": [{"name": "X", "cores": 2, "logical_processors": 4}]}
+    assert inventory_fingerprint(inv) == inventory_fingerprint(inv)
+    assert hardware_snapshot(inv)["memory_gb"] == 16.0
diff --git a/backend/tests/test_telegram_templates.py b/backend/tests/test_telegram_templates.py
index f160cee..e17845a 100644
--- a/backend/tests/test_telegram_templates.py
+++ b/backend/tests/test_telegram_templates.py
@@ -303,3 +303,26 @@ def test_ssh_failed_template():
     assert "root" in text
     assert "10.10.36.9" in text
     assert "3 / 5" in text
+
+
+def test_agent_inventory_hardware_change_template():
+    event = Event(
+        event_id="00000000-0000-4000-8000-000000000504",
+        host_id=1,
+        occurred_at=datetime(2026, 6, 4, 12, 0, tzinfo=timezone.utc),
+        category="agent",
+        type="agent.inventory",
+        severity="warning",
+        title="Hardware changed",
+        summary="memory_gb changed",
+        details={
+            "hardware_changes": [
+                {"field": "memory_gb", "old": 16.0, "new": 32.0},
+            ]
+        },
+        payload={},
+    )
+    text = format_event_telegram_html(event)
+    assert "железо" in text.lower() or "Изменилось" in text
+    assert "memory_gb" in text
+    assert "32" in text
diff --git a/docs/agent-integration.md b/docs/agent-integration.md
index 4a80d08..faf4081 100644
--- a/docs/agent-integration.md
+++ b/docs/agent-integration.md
@@ -193,6 +193,9 @@ Idempotency-Key: 550e8400-e29b-41d4-a716-446655440000
 | RD Gateway 303 | `rdg.connection.failed` | warning |
 | Старт/стоп | `agent.lifecycle` | info |
 | Отчёт | `report.daily.rdp` | info |
+| Инвентаризация железа/ПО | `agent.inventory` | info (SAC: **warning**, если изменилось железо) |
+
+**Инвентаризация (`agent.inventory`, RDP ≥ 2.0.21-SAC):** агент шлёт снимок в `details.inventory` (CPU, RAM, диски, GPU, Windows, IPv4). Интервал по умолчанию **12 ч**; отключение: `$GetInventory = $false` в `login_monitor.settings.ps1`. SAC хранит последний снимок в `hosts.inventory`; при изменении железа ingest повышает severity до **warning** и шлёт оповещение.
 
 **Дополнительные поля:**
 
@@ -203,7 +206,7 @@ Idempotency-Key: 550e8400-e29b-41d4-a716-446655440000
 - `gateway_target`, `gateway_error_code`
 - `filtered_out`, `filter_reason`
 
-**Переключатели в `login_monitor.settings.ps1` (≥ 1.2.23-SAC):** `$EnableRcmShadowControlMonitoring`, `$EnableWinRmInboundMonitoring`, `$EnableAdminShareMonitoring` (по умолчанию `1`; Security **5140**, audit File Share). Подавление: `ignore.lst` с префиксами `shadow:`, `winrm:`, `smb:` / `5140:`.
+**Переключатели в `login_monitor.settings.ps1` (≥ 1.2.23-SAC):** `$EnableRcmShadowControlMonitoring`, `$EnableWinRmInboundMonitoring`, `$EnableAdminShareMonitoring` (по умолчанию `1`; Security **5140**, audit File Share). **`$GetInventory`** (по умолчанию `$true`) — опрос железа/ПО для SAC. Подавление: `ignore.lst` с префиксами `shadow:`, `winrm:`, `smb:` / `5140:`.
 
 ---
 
diff --git a/docs/event-schema-v1.json b/docs/event-schema-v1.json
index 5d9b725..c867a07 100644
--- a/docs/event-schema-v1.json
+++ b/docs/event-schema-v1.json
@@ -102,6 +102,7 @@
         "rdg.connection.success",
         "report.daily.ssh",
         "agent.heartbeat",
+        "agent.inventory",
         "agent.test"
       ]
     },
diff --git a/frontend/src/api.ts b/frontend/src/api.ts
index c9f497b..a58357c 100644
--- a/frontend/src/api.ts
+++ b/frontend/src/api.ts
@@ -160,6 +160,7 @@ export interface EventSummary {
   host_id: number;
   hostname: string;
   display_name?: string | null;
+  product_version?: string | null;
   occurred_at: string;
   received_at: string;
   category: string;
@@ -187,6 +188,7 @@ export interface HostSummary {
   hostname: string;
   display_name: string | null;
   os_family: string;
+  os_version?: string | null;
   product: string;
   product_version: string | null;
   ipv4: string | null;
@@ -194,9 +196,24 @@ export interface HostSummary {
   event_count: number | null;
   last_heartbeat_at: string | null;
   last_daily_report_at: string | null;
+  last_inventory_at?: string | null;
   agent_status: "online" | "stale" | "unknown";
 }
 
+export interface HostDetail extends HostSummary {
+  agent_instance_id: string | null;
+  ipv6: string | null;
+  tags: string[] | null;
+  use_sac_mode: string | null;
+  inventory: Record<string, unknown> | null;
+  inventory_updated_at: string | null;
+  created_at: string | null;
+}
+
+export function fetchHost(id: number): Promise<HostDetail> {
+  return apiFetch<HostDetail>(`/api/v1/hosts/${id}`);
+}
+
 export interface HostListResponse {
   items: HostSummary[];
   total: number;
diff --git a/frontend/src/components/AppSidebar.vue b/frontend/src/components/AppSidebar.vue
index a77cf1c..9bbf8d1 100644
--- a/frontend/src/components/AppSidebar.vue
+++ b/frontend/src/components/AppSidebar.vue
@@ -47,7 +47,7 @@ const navItems = computed(() => {
     { to: "/events", label: "События", icon: "☰", match: "prefix" as const },
     { to: "/reports", label: "Отчёты", icon: "▤", match: "prefix" as const },
     { to: "/problems", label: "Проблемы", icon: "!", match: "prefix" as const },
-    { to: "/hosts", label: "Хосты", icon: "⬢", match: "exact" as const },
+    { to: "/hosts", label: "Хосты", icon: "⬢", match: "prefix" as const },
   ];
   if (isAdmin()) {
     items.push(
diff --git a/frontend/src/router.ts b/frontend/src/router.ts
index f64dc1a..d8ac9bc 100644
--- a/frontend/src/router.ts
+++ b/frontend/src/router.ts
@@ -3,6 +3,7 @@ import { getToken, isAdmin, setRole, fetchMe } from "./api";
 import EventsView from "./views/EventsView.vue";
 import EventDetailView from "./views/EventDetailView.vue";
 import HostsView from "./views/HostsView.vue";
+import HostDetailView from "./views/HostDetailView.vue";
 import LoginView from "./views/LoginView.vue";
 import ErrorPageView from "./views/ErrorPageView.vue";
 import ProblemsView from "./views/ProblemsView.vue";
@@ -35,6 +36,7 @@ const router = createRouter({
     { path: "/events/:id", component: EventDetailView, props: true },
     { path: "/reports", component: ReportsView },
     { path: "/hosts", component: HostsView },
+    { path: "/hosts/:id", component: HostDetailView, props: true },
     { path: "/problems", component: ProblemsView },
     { path: "/problems/:id", component: ProblemDetailView, props: true },
     { path: "/settings", component: SettingsView, meta: { adminOnly: true } },
diff --git a/frontend/src/version.ts b/frontend/src/version.ts
index 3b0831d..5a0af84 100644
--- a/frontend/src/version.ts
+++ b/frontend/src/version.ts
@@ -1,3 +1,3 @@
 export const APP_NAME = "Security Alert Center";
-export const APP_VERSION = "0.7.4";
+export const APP_VERSION = "0.7.5";
 export const APP_VERSION_LABEL = `${APP_NAME} v.${APP_VERSION}`;
diff --git a/frontend/src/views/DashboardView.vue b/frontend/src/views/DashboardView.vue
index ce8e50c..cdb73d9 100644
--- a/frontend/src/views/DashboardView.vue
+++ b/frontend/src/views/DashboardView.vue
@@ -236,6 +236,8 @@
 
           <th>Имя сервера</th>
 
+          <th>Версия агента</th>
+
           <th>Severity</th>
 
           <th>Title</th>
@@ -268,6 +270,8 @@
 
           <td>{{ formatServerName(e.display_name) }}</td>
 
+          <td>{{ e.product_version || "—" }}</td>
+
           <td :class="'sev-' + e.severity">{{ e.severity }}</td>
 
           <td>{{ e.title }}</td>
diff --git a/frontend/src/views/EventsView.vue b/frontend/src/views/EventsView.vue
index 1015d76..1ea8539 100644
--- a/frontend/src/views/EventsView.vue
+++ b/frontend/src/views/EventsView.vue
@@ -33,6 +33,7 @@
           <th>Время</th>
           <th>Хост</th>
           <th>Имя сервера</th>
+          <th>Версия агента</th>
           <th>Severity</th>
           <th>Type</th>
           <th>Title</th>
@@ -46,6 +47,7 @@
           <td>{{ formatDt(e.occurred_at) }}</td>
           <td>{{ e.hostname }}</td>
           <td>{{ formatServerName(e.display_name) }}</td>
+          <td>{{ e.product_version || "—" }}</td>
           <td :class="'sev-' + e.severity">{{ e.severity }}</td>
           <td><code>{{ e.type }}</code></td>
           <td>{{ e.title }}</td>
diff --git a/frontend/src/views/HostDetailView.vue b/frontend/src/views/HostDetailView.vue
new file mode 100644
index 0000000..5cc3404
--- /dev/null
+++ b/frontend/src/views/HostDetailView.vue
@@ -0,0 +1,272 @@
+<template>
+  <p><RouterLink to="/hosts">← Хосты</RouterLink></p>
+  <p v-if="error" class="error">{{ error }}</p>
+  <p v-else-if="loading">Загрузка…</p>
+  <template v-else-if="host">
+    <h1>{{ host.display_name || host.hostname }}</h1>
+    <div class="card report-meta">
+      <p>
+        <strong>Hostname:</strong> {{ host.hostname }}
+        · <strong>ID:</strong> {{ host.id }}
+        · <strong>Агент:</strong>
+        <span :class="'agent-' + host.agent_status">{{ agentLabel(host.agent_status) }}</span>
+      </p>
+      <p>
+        <strong>Product:</strong> {{ host.product }} {{ host.product_version || "" }}
+        · <strong>OS:</strong> {{ host.os_family }} {{ host.os_version || "" }}
+        · <strong>IPv4:</strong> {{ host.ipv4 || "—" }}
+      </p>
+      <p>
+        <strong>Heartbeat:</strong> {{ host.last_heartbeat_at ? formatDt(host.last_heartbeat_at) : "—" }}
+        · <strong>Last seen:</strong> {{ formatDt(host.last_seen_at) }}
+        · <strong>Инвентаризация:</strong>
+        {{ host.last_inventory_at ? formatDt(host.last_inventory_at) : "—" }}
+        · <strong>Событий:</strong> {{ host.event_count ?? 0 }}
+      </p>
+    </div>
+
+    <section v-if="inventory" class="host-inventory card">
+      <h2>Железо и ПО</h2>
+      <div v-if="windowsInfo" class="inv-block">
+        <h3>Windows</h3>
+        <p>{{ windowsInfo }}</p>
+      </div>
+      <div v-if="computerName" class="inv-block">
+        <p><strong>Имя компьютера:</strong> {{ computerName }}</p>
+      </div>
+      <div v-if="processors.length" class="inv-block">
+        <h3>Процессор</h3>
+        <ul>
+          <li v-for="(p, i) in processors" :key="'cpu-' + i">
+            {{ p.name }}
+            <span v-if="p.cores != null"> — {{ p.cores }} ядер / {{ p.logical_processors }} потоков</span>
+          </li>
+        </ul>
+      </div>
+      <div v-if="motherboard" class="inv-block">
+        <h3>Материнская плата</h3>
+        <p>{{ motherboard }}</p>
+      </div>
+      <div v-if="memoryGb != null" class="inv-block">
+        <h3>Память</h3>
+        <p>{{ memoryGb }} GB</p>
+      </div>
+      <div v-if="disks.length" class="inv-block">
+        <h3>Диски</h3>
+        <table class="dash-table">
+          <thead>
+            <tr>
+              <th>Имя</th>
+              <th>Тип</th>
+              <th>Размер, GB</th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr v-for="(d, i) in disks" :key="'disk-' + i">
+              <td>{{ d.friendly_name || "—" }}</td>
+              <td>{{ d.media_type || "—" }}</td>
+              <td>{{ d.size_gb ?? "—" }}</td>
+            </tr>
+          </tbody>
+        </table>
+      </div>
+      <div v-if="video.length" class="inv-block">
+        <h3>Видео</h3>
+        <ul>
+          <li v-for="(v, i) in video" :key="'gpu-' + i">{{ v.name }}</li>
+        </ul>
+      </div>
+      <div v-if="ipv4List.length" class="inv-block">
+        <h3>IPv4</h3>
+        <p>{{ ipv4List.join(", ") }}</p>
+      </div>
+    </section>
+    <p v-else class="muted">Инвентаризация ещё не поступала с агента (agent.inventory).</p>
+
+    <h2>События хоста</h2>
+    <p v-if="eventsLoading">Загрузка событий…</p>
+    <p v-else-if="eventsError" class="error">{{ eventsError }}</p>
+    <template v-else>
+      <p>Всего: {{ events?.total ?? 0 }}</p>
+      <table>
+        <thead>
+          <tr>
+            <th>ID</th>
+            <th>Время</th>
+            <th>Severity</th>
+            <th>Type</th>
+            <th>Title</th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-for="e in events?.items ?? []" :key="e.id">
+            <td>
+              <RouterLink :to="{ path: `/events/${e.id}`, query: eventsBackQuery }">{{ e.id }}</RouterLink>
+            </td>
+            <td>{{ formatDt(e.occurred_at) }}</td>
+            <td :class="'sev-' + e.severity">{{ e.severity }}</td>
+            <td><code>{{ e.type }}</code></td>
+            <td>{{ e.title }}</td>
+          </tr>
+        </tbody>
+      </table>
+      <div class="filters" style="margin-top: 1rem">
+        <button type="button" class="secondary" :disabled="eventsPage <= 1" @click="loadEvents(eventsPage - 1)">
+          Назад
+        </button>
+        <span>Стр. {{ eventsPage }}</span>
+        <button
+          type="button"
+          class="secondary"
+          :disabled="!events || eventsPage * eventsPageSize >= events.total"
+          @click="loadEvents(eventsPage + 1)"
+        >
+          Вперёд
+        </button>
+      </div>
+    </template>
+  </template>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, ref, watch } from "vue";
+import { useRoute } from "vue-router";
+import { apiFetch, type EventListResponse, type HostDetail } from "../api";
+
+const props = defineProps<{ id: string }>();
+const route = useRoute();
+
+const host = ref<HostDetail | null>(null);
+const events = ref<EventListResponse | null>(null);
+const loading = ref(false);
+const eventsLoading = ref(false);
+const error = ref("");
+const eventsError = ref("");
+const eventsPage = ref(1);
+const eventsPageSize = 50;
+
+const hostId = computed(() => parseInt(props.id, 10));
+
+const inventory = computed(() => host.value?.inventory ?? null);
+
+const windowsInfo = computed(() => {
+  const w = inventory.value?.windows as Record<string, string> | undefined;
+  if (!w) return "";
+  const parts = [w.product_name, w.version, w.os_hardware_abstraction_layer].filter(Boolean);
+  return parts.join(" · ");
+});
+
+const computerName = computed(() => {
+  const v = inventory.value?.computer_name;
+  return typeof v === "string" && v.trim() ? v : "";
+});
+
+const processors = computed(() => {
+  const raw = inventory.value?.processor;
+  if (!Array.isArray(raw)) return [];
+  return raw.filter((p): p is Record<string, unknown> => p != null && typeof p === "object");
+});
+
+const motherboard = computed(() => {
+  const m = inventory.value?.motherboard as Record<string, string> | undefined;
+  if (!m) return "";
+  return [m.manufacturer, m.product].filter(Boolean).join(" ");
+});
+
+const memoryGb = computed(() => {
+  const v = inventory.value?.memory_gb;
+  return typeof v === "number" ? v : null;
+});
+
+const disks = computed(() => {
+  const raw = inventory.value?.disks;
+  if (!Array.isArray(raw)) return [];
+  return raw.filter((d): d is Record<string, unknown> => d != null && typeof d === "object");
+});
+
+const video = computed(() => {
+  const raw = inventory.value?.video;
+  if (!Array.isArray(raw)) return [];
+  return raw.filter((v): v is Record<string, string> => v != null && typeof v === "object");
+});
+
+const ipv4List = computed(() => {
+  const raw = inventory.value?.ipv4;
+  if (!Array.isArray(raw)) return [];
+  return raw.map(String).filter(Boolean);
+});
+
+const eventsBackQuery = computed(() => ({ host_id: String(hostId.value) }));
+
+function formatDt(iso: string) {
+  return new Date(iso).toLocaleString("ru-RU");
+}
+
+function agentLabel(status: string) {
+  if (status === "online") return "online";
+  if (status === "stale") return "stale";
+  return "unknown";
+}
+
+async function loadHost() {
+  loading.value = true;
+  error.value = "";
+  try {
+    host.value = await apiFetch<HostDetail>(`/api/v1/hosts/${hostId.value}`);
+  } catch (e) {
+    error.value = e instanceof Error ? e.message : "Ошибка загрузки хоста";
+  } finally {
+    loading.value = false;
+  }
+}
+
+async function loadEvents(page = 1) {
+  eventsLoading.value = true;
+  eventsError.value = "";
+  eventsPage.value = page;
+  try {
+    const params = new URLSearchParams({
+      page: String(page),
+      page_size: String(eventsPageSize),
+      host_id: String(hostId.value),
+    });
+    events.value = await apiFetch<EventListResponse>(`/api/v1/events?${params}`);
+  } catch (e) {
+    eventsError.value = e instanceof Error ? e.message : "Ошибка загрузки событий";
+  } finally {
+    eventsLoading.value = false;
+  }
+}
+
+onMounted(async () => {
+  await loadHost();
+  await loadEvents(1);
+});
+
+watch(
+  () => route.params.id,
+  async () => {
+    await loadHost();
+    await loadEvents(1);
+  },
+);
+</script>
+
+<style scoped>
+.host-inventory {
+  margin: 1rem 0 1.5rem;
+}
+
+.inv-block {
+  margin-bottom: 1rem;
+}
+
+.inv-block h3 {
+  margin: 0 0 0.35rem;
+  font-size: 1rem;
+}
+
+.muted {
+  color: #9aa4b2;
+}
+</style>
diff --git a/frontend/src/views/HostsView.vue b/frontend/src/views/HostsView.vue
index cd23968..bd8df5f 100644
--- a/frontend/src/views/HostsView.vue
+++ b/frontend/src/views/HostsView.vue
@@ -17,10 +17,10 @@
           <th><button type="button" class="th-sort" @click="setSort('id')">ID {{ sortMark('id') }}</button></th>
           <th><button type="button" class="th-sort" @click="setSort('display_name')">Имя {{ sortMark('display_name') }}</button></th>
           <th><button type="button" class="th-sort" @click="setSort('hostname')">Hostname {{ sortMark('hostname') }}</button></th>
-          <th><button type="button" class="th-sort" @click="setSort('product')">Product {{ sortMark('product') }}</button></th>
+          <th><button type="button" class="th-sort" @click="setSort('product_version')">Версия агента {{ sortMark('product_version') }}</button></th>
           <th><button type="button" class="th-sort" @click="setSort('os_family')">OS {{ sortMark('os_family') }}</button></th>
           <th><button type="button" class="th-sort" @click="setSort('ipv4')">IPv4 {{ sortMark('ipv4') }}</button></th>
-          <th>Агент</th>
+          <th><button type="button" class="th-sort" @click="setSort('agent_status')">Статус {{ sortMark('agent_status') }}</button></th>
           <th>Heartbeat</th>
           <th><button type="button" class="th-sort" @click="setSort('last_daily_report_at')">Отчёт {{ sortMark('last_daily_report_at') }}</button></th>
           <th><button type="button" class="th-sort" @click="setSort('last_seen_at')">Last seen {{ sortMark('last_seen_at') }}</button></th>
@@ -31,9 +31,18 @@
       <tbody>
         <tr v-for="h in sortedItems" :key="h.id">
           <td>{{ h.id }}</td>
-          <td>{{ h.display_name || "—" }}</td>
-          <td>{{ h.hostname }}</td>
-          <td>{{ h.product }} {{ h.product_version || "" }}</td>
+          <td>
+            <RouterLink :to="`/hosts/${h.id}`" class="host-link">
+              {{ h.display_name || h.hostname }}
+            </RouterLink>
+          </td>
+          <td>
+            <RouterLink v-if="h.hostname !== (h.display_name || h.hostname)" :to="`/hosts/${h.id}`" class="host-link">
+              {{ h.hostname }}
+            </RouterLink>
+            <span v-else>{{ h.hostname }}</span>
+          </td>
+          <td>{{ h.product_version || "—" }}</td>
           <td>{{ h.os_family }}</td>
           <td>{{ h.ipv4 || "—" }}</td>
           <td :class="'agent-' + h.agent_status">{{ agentLabel(h.agent_status) }}</td>
@@ -78,9 +87,10 @@ type SortKey =
   | "id"
   | "display_name"
   | "hostname"
-  | "product"
+  | "product_version"
   | "os_family"
   | "ipv4"
+  | "agent_status"
   | "last_seen_at"
   | "event_count"
   | "last_daily_report_at";
@@ -89,9 +99,10 @@ const HOSTS_SORT_KEYS: SortKey[] = [
   "id",
   "display_name",
   "hostname",
-  "product",
+  "product_version",
   "os_family",
   "ipv4",
+  "agent_status",
   "last_seen_at",
   "event_count",
   "last_daily_report_at",
@@ -137,6 +148,12 @@ function agentLabel(status: string) {
   return "unknown";
 }
 
+function agentStatusOrder(status: string) {
+  if (status === "online") return 0;
+  if (status === "stale") return 1;
+  return 2;
+}
+
 function setSort(key: SortKey) {
   if (sortBy.value === key) {
     sortDir.value = sortDir.value === "asc" ? "desc" : "asc";
@@ -180,8 +197,8 @@ const sortedItems = computed(() => {
       case "hostname":
         cmp = compareNullableStrings(a.hostname, b.hostname);
         break;
-      case "product":
-        cmp = compareNullableStrings(a.product, b.product);
+      case "product_version":
+        cmp = compareNullableStrings(a.product_version, b.product_version);
         break;
       case "os_family":
         cmp = compareNullableStrings(a.os_family, b.os_family);
@@ -189,6 +206,9 @@ const sortedItems = computed(() => {
       case "ipv4":
         cmp = compareNullableStrings(a.ipv4, b.ipv4);
         break;
+      case "agent_status":
+        cmp = agentStatusOrder(a.agent_status) - agentStatusOrder(b.agent_status);
+        break;
       case "event_count":
         cmp = (a.event_count ?? 0) - (b.event_count ?? 0);
         break;
@@ -256,3 +276,13 @@ onMounted(() => {
   loadHosts();
 });
 </script>
+
+<style scoped>
+.host-link {
+  cursor: pointer;
+  text-decoration: none;
+}
+.host-link:hover {
+  text-decoration: underline;
+}
+</style>
diff --git a/schemas/event-schema-v1.json b/schemas/event-schema-v1.json
index 99aff47..d2b779d 100644
--- a/schemas/event-schema-v1.json
+++ b/schemas/event-schema-v1.json
@@ -104,6 +104,7 @@
         "rdg.connection.failed",
         "report.daily.ssh",
         "agent.heartbeat",
+        "agent.inventory",
         "agent.test"
       ]
     },