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Security News, Assessments & Alerts Page 21

Security News, Assessments & Alerts

Security Issues, Vulnerabilities, Exploits & Government Alerts

Operation SkyCloak Deploys Tor-Enabled OpenSSH Backdoor Targeting Defense Sectors

Operation SkyCloak Deploys Tor-Enabled OpenSSH Backdoor Targeting Defense Sectors

Nov 04, 2025Ravie LakshmananMalware / Cyber Espionage Threat actors are leveraging weaponized attachments distributed via phishing emails to deliver malware likely targeting the defense sector in Russia and Belarus. According to multiple reports from Cyble… 

Google’s AI ‘Big Sleep’ Finds 5 New Vulnerabilities in Apple’s Safari WebKit

Google’s AI ‘Big Sleep’ Finds 5 New Vulnerabilities in Apple’s Safari WebKit

Nov 04, 2025Ravie LakshmananArtificial Intelligence / Vulnerability Google’s artificial intelligence (AI)-powered cybersecurity agent called Big Sleep has been credited by Apple for discovering as many as five different security flaws in the WebKit component used… 

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… 

Malicious VSX Extension “SleepyDuck” Uses Ethereum to Keep Its Command Server Alive

Malicious VSX Extension “SleepyDuck” Uses Ethereum to Keep Its Command Server Alive

Nov 03, 2025Ravie LakshmananCryptocurrency / Threat Intelligence Cybersecurity researchers have flagged a new malicious extension in the Open VSX registry that harbors a remote access trojan called SleepyDuck. According to Secure Annex’s John Tuckner, the… 

Cybercriminals Exploit Remote Monitoring Tools to Infiltrate Logistics and Freight Networks

Cybercriminals Exploit Remote Monitoring Tools to Infiltrate Logistics and Freight Networks

Nov 03, 2025Ravie LakshmananCybercrime / Supply Chain Attack Bad actors are increasingly training their sights on trucking and logistics companies with an aim to infect them with remote monitoring and management (RMM) software for financial… 

Lazarus Hits Web3, Intel/AMD TEEs Cracked, Dark Web Leak Tool & More

Lazarus Hits Web3, Intel/AMD TEEs Cracked, Dark Web Leak Tool & More

Nov 03, 2025Ravie LakshmananCybersecurity / Hacking News Cyberattacks are getting smarter and harder to stop. This week, hackers used sneaky tools, tricked trusted systems, and quickly took advantage of new security problems—some just hours after…