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November 2025 Page 79

November 2025

U.S. Prosecutors Indict Cybersecurity Insiders Accused of BlackCat Ransomware Attacks

U.S. Prosecutors Indict Cybersecurity Insiders Accused of BlackCat Ransomware Attacks

Nov 04, 2025Ravie LakshmananRansomware / Cybercrime Federal prosecutors in the U.S. have accused a trio of allegedly hacking the networks of five U.S. companies with BlackCat (aka ALPHV) ransomware between May and November 2023 and… 

Microsoft Detects “SesameOp” Backdoor Using OpenAI’s API as a Stealth Command Channel

Microsoft Detects “SesameOp” Backdoor Using OpenAI’s API as a Stealth Command Channel

Nov 04, 2025Ravie LakshmananArtificial Intelligence / Malware Microsoft has disclosed details of a novel backdoor dubbed SesameOp that uses OpenAI Assistants Application Programming Interface (API) for command-and-control (C2) communications. “Instead of relying on more traditional…