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SesameOp: New backdoor exploits OpenAI API for covert C2

Securityaffairs.Co •Pierluigi Paganini • November 4, 2025

Microsoft found a new backdoor, SesameOp, using the OpenAI Assistants API for stealthy command-and-control in hacked systems. Microsoft uncovered a new backdoor, named SesameOp, that abuses the OpenAI Assistants API for command-and-control, allowing covert communication within compromised systems. Microsoft Incident Response – Detection and Response Team (DART) researchers discovered the backdoor in July 2025 while […]

Extracted Entities

Attack Types (1)

Malware

Malware (1)

Sesameop