Microsoft has finally admitted that Windows 11 may no longer correctly back up your files, even if you’ve configured the feature ‘File History.’ According to our tests, the bug affects almost everyone who installed the September 2026 update, but most users may not realize why backups have silently stopped working. This issue specifically affects... Weiterlesen
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Microsoft confirms Windows 11 quietly stopped backing up your files due to a new bug in September 2026 update
Microsoft has finally admitted that Windows 11 may no longer correctly back up your files, even if you’ve configured the feature ‘File History.’ According to our tests, the bug affects almost everyone who installed the September 2026 updat…
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title: Detect Exploitation - Microsoft confirms Windows 11 quietly stopped backing up your files due to a new bug in September 2026 update
id: 68c01802-16d1-4be6-b47c-09a55c37afce
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "Microsoft confirms Windows 11 " ascii wide
condition:
any of them
}tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich Microsoft confirms Windows 11 quietly st.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
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Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
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- 1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
- 2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
- 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
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