DART

Entity category: ORGANIZATION

Artificial Intelligence

Microsoft: SesameOp Malware Exploits OpenAI API in Attacks

November 5, 2025
Digital screen displays a warning sign and the word MALWARE in pink, surrounded by code.

Microsoft discovered the SesameOp backdoor, which exploits the OpenAI Assistants API as a covert command-and-control channel to maintain persistent access…

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