The threat actors behind a malware family known as Winos 4.0 (aka ValleyRAT) have expanded their targeting footprint from China and Taiwan to target Japan and Malaysia with another remote access trojan (RAT) tracked as HoldingHands RAT (aka Gh0stBins). “The… Read More "Silver Fox Expands Winos 4.0 Attacks to Japan and Malaysia via HoldingHands RAT"
The North Korean threat actor linked to the Contagious Interview campaign has been observed merging some of the functionality of two of its malware programs, indicating that the hacking group is actively refining its toolset. That’s according to new findings… Read More "North Korean Hackers Combine BeaverTail and OtterCookie into Advanced JS Malware"
Oct 17, 2025The Hacker NewsArtificial Intelligence / Identity Security The danger isn’t that AI agents have bad days — it’s that they never do. They execute faithfully, even when what they’re executing is a mistake. A single misstep in logic… Read More "Your First and Last Line of Defense"
Oct 17, 2025Ravie LakshmananVulnerability / VPN Security Cybersecurity researchers have disclosed details of a recently patched critical security flaw in WatchGuard Fireware that could allow unauthenticated attackers to execute arbitrary code. The vulnerability, tracked as CVE-2025-9242 (CVSS score: 9.3), is… Read More "Researchers Uncover WatchGuard VPN Bug That Could Let Attackers Take Over Devices"
Oct 17, 2025Ravie LakshmananMalware / Cybercrime Microsoft on Thursday disclosed that it revoked more than 200 certificates used by a threat actor it tracks as Vanilla Tempest to fraudulently sign malicious binaries in ransomware attacks. The certificates were “used in… Read More "Microsoft Revokes 200 Fraudulent Certificates Used in Rhysida Ransomware Campaign"
Penetration testing helps organizations ensure IT systems are secure, but it should never be treated in a one-size-fits-all approach. Traditional approaches can be rigid and cost your organization time and money – while producing inferior results. The benefits of pen… Read More "Beware the Hidden Costs of Pen Testing"
Oct 16, 2025Ravie LakshmananVulnerability / Linux Cybersecurity researchers have disclosed details of a new campaign that exploited a recently disclosed security flaw impacting Cisco IOS Software and IOS XE Software to deploy Linux rootkits on older, unprotected systems. The activity,… Read More "Hackers Deploy Linux Rootkits via Cisco SNMP Flaw in “Zero Disco’ Attacks"
Oct 16, 2025Ravie LakshmananVulnerability / Malware An investigation into the compromise of an Amazon Web Services (AWS)-hosted infrastructure has led to the discovery of a new GNU/Linux rootkit dubbed LinkPro, according to findings from Synacktiv. “This backdoor features functionalities relying… Read More "LinkPro Linux Rootkit Uses eBPF to Hide and Activates via Magic TCP Packets"
A financially motivated threat actor codenamed UNC5142 has been observed abusing blockchain smart contracts as a way to facilitate the distribution of information stealers such as Atomic (AMOS), Lumma, Rhadamanthys (aka RADTHIEF), and Vidar, targeting both Windows and Apple macOS… Read More "Hackers Abuse Blockchain Smart Contracts to Spread Malware via Infected WordPress Sites"
Oct 16, 2025Ravie LakshmananMalware / Blockchain A threat actor with ties to the Democratic People’s Republic of Korea (aka North Korea) has been observed leveraging the EtherHiding technique to distribute malware and enable cryptocurrency theft, marking the first time a… Read More "North Korean Hackers Use EtherHiding to Hide Malware Inside Blockchain Smart Contracts"
