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OpenAI ChatGPT Enterprise Suspicious Gmail Discovery

Detects ChatGPT Enterprise Gmail connector searches that look like sensitive discovery: attachment hunts across multiple document types, or queries matching credential, financial, HR, or legal themes. Attackers…

Description

Detects ChatGPT Enterprise Gmail connector searches that look like sensitive discovery: attachment hunts across multiple document types, or queries matching credential, financial, HR, or legal themes. Attackers abusing a linked Gmail connector after session compromise often search mail for high-value content before exfiltration or send-as abuse.

Detection logic

Its licence does not clear it for publishing here

Sunturai publishes a detection's own text where the licence it arrived under has been reviewed and permits it, and Elastic License 2.0 has not. The query as its source wrote it, its canonical form and the hash that pins this revision are in the workspace record.

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Detection requirements

Platform
ESXiIaaSLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.

Known benign triggers

  • HR, legal, finance, or IR users who legitimately search Gmail for attachments, payroll, or contract terms via ChatGPT.

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