Threat actors have repurposed an AI prompt-injection technique known as ASCII smuggling to evade email security controls at massive scale, hiding invisible Unicode characters within financial phishing lures. Microsoft observed the activity reach more than 2.3 million messages per day, demonstrating how techniques first popularized in AI-security... Weiterlesen
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⚡ tsecurity.de Intelligence
Hackers Abuse AI-Era ASCII Smuggling to Hide Phishing Content in Millions of Emails
Threat actors have repurposed an AI prompt-injection technique known as ASCII smuggling to evade email security controls at massive scale, hiding invisible Unicode characters within financial phishing lures. Microsoft observed the activity…
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title: Detect Exploitation - Hackers Abuse AI-Era ASCII Smuggling to Hide Phishing Content in Millions of Emails
id: 01d17f5d-1676-48a1-82a3-beb5441c6a9c
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_access
- attack.t1566rule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "Hackers Abuse AI-Era ASCII Smu" ascii wide
condition:
any of them
}tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich Hackers Abuse AI-Era ASCII Smuggling to .... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
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- 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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