October Patch Tuesday beats January ’25 record

Microsoft co-signed a malicious kernel driver, and now it’s being used to kill security software in ransomware attacks.

The threat actor known as Silver Fox has turned its focus to India, using income tax-themed lures in phishing campaigns to distribute a modular remote access trojan called ValleyRAT (aka Winos 4.0). “This sophisticated attack leverages a complex kill chain involving DLL hijacking and the modular Valley RAT to ensure persistence,” CloudSEK researchers Prajwal Awasthi…

Russian organizations have become the target of a phishing campaign that distributes malware called PureRAT, according to new findings from Kaspersky. “The campaign aimed at Russian business began back in March 2023, but in the first third of 2025 the number of attacks quadrupled compared to the same period in 2024,” the cybersecurity vendor said….

A year-old Chinese threat actor looks like a cybercrime gang, acts like a state-associated APT, and attacks organizations in unexpected places.

By addressing these overlooked risk vectors, organizations can continue leveraging GitHub’s innovation while protecting against sophisticated supply chain attacks targeting interconnected software.

Cybersecurity researchers have disclosed details of an intrusion that involved the use of a CloudZ remote access tool (RAT) and a previous undocumented plugin dubbed Pheno with the aim of facilitating credential theft. “According to the functionalities of the CloudZ RAT and Pheno plugin, this was with the intention of stealing victims’ credentials and potentially…