Signed malware impersonating workplace apps deploys RMM backdoors

In February 2026, Microsoft Defender Experts identified multiple phishing campaigns attributed to an unknown threat actor. The campaigns used workplace meeting lures, PDF attachments, and abuse of legitimate binaries to deliver signed malware. Phishing emails directed users to download malicious...

Signed malware impersonating workplace apps deploys RMM backdoors

In February 2026, Microsoft Defender Experts identified multiple phishing campaigns attributed to an unknown threat actor. The campaigns used workplace meeting lures, PDF attachments, and abuse of legitimate binaries to deliver signed malware. Phishing emails directed users to download malicious...

Details of the REvil Ransomware Attack

ArsTechnica has a good story on the REvil ransomware attack of last weekend, with technical details: This weekends attack was carried out with almost surgical precision. According to Cybereason, the REvil affiliates first gained access to targeted environments and then used the zero-day in the...

The Rise of Super-Stealthy Digitally Signed Malware—Thanks to the Dark Web

Guess what's more expensive than counterfeit United States passports, stolen credit cards and even guns on the dark web? It's digital code signing certificates. A recent study conducted by the Cyber Security Research Institute CSRI this week revealed that stolen digital code-signing certificates...

Mobile Malware Is Up – Way Up – in McAfee Q2 Threat Report

McAfee Labs researchers today announced a surge in malware samples this year – particularly threats that take advantage of mobile networks to launch drive-by downloads, control botnets using Twitter and spread ransomware that locks down infected machines and demand payments from users. The Santa...