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Cybersecurity researchers have disclosed a vulnerability in Anthropic's Claude Google Chrome Extension that could have been exploited to trigger malicious prompts simply by visiting a web page. The flaw "allowed any website to silently inject prompts into that assistant as if the user wrote them," Koi Security researcher Oren Yomtov said in a report shared with The Hacker News. "No clicks, no

OpenAI’s Safety Bug Bounty program seeks to address AI safety vulnerabilities beyond traditional security flaws

Unmasking impostors is something the art world has faced for decades, and there are valuable lessons from the works of Elmyr de Hory that can apply to the world of defensive cybersecurity. During the 1960s, de Hory gained infamy as a premier forger, passing off counterfeit masterworks of Picasso, Matisse, and Renoir to unsuspecting collectors and renowned museums. Over the next several decades,

Some weeks in security feel loud. This one feels sneaky. Less big dramatic fireworks, more of that slow creeping sense that too many people are getting way too comfortable abusing things they probably shouldn’t even be touching. There’s a little bit of everything in this one, too. Weird delivery tricks, old problems coming back in slightly worse forms, shady infrastructure doing

A disgruntled data analyst decides that the best response to losing his contract is to steal the entire company payroll database and demand $2.5 million in Bitcoin - signing his extortion emails from a company called "Loot." Meanwhile, two people drive up to the entrance of the UK's nuclear submarine base at Faslane and politely ask if they can have a look around. Tourists? Spies? Something in between? All this and more in episode 460 of the "Smashing Security" podcast with cybersecurity veteran Graham Cluley, and special guest Jenny Radcliffe.

The kernel exploit for two security vulnerabilities used in the recently uncovered Apple iOS exploit kit known as Coruna is an updated version of the same exploit that was used in the Operation Triangulation campaign back in 2023, according to new findings from Kaspersky. "When Coruna was first reported, the public evidence wasn't sufficient to link its code to Triangulation — shared

Halcyon and Beazley Security track the return of Iranian ransomware group Pay2Key

The National Crime Agency has warned construction firms about surging invoice fraud

Cybersecurity researchers have discovered a new payment skimmer that uses WebRTC data channels as a means to receive payloads and exfiltrate data, effectively bypassing security controls. "Instead of the usual HTTP requests or image beacons, this malware uses WebRTC data channels to load its payload and exfiltrate stolen payment data," Sansec said in a report published this week. The attack,

The alleged administrator of the LeakBase cybercrime forum has been arrested by Russian law enforcement authorities, state media reported Thursday. According to TASS and MVD Media, a news website linked to the Russian Interior Ministry, the suspect is a resident of the city of Taganrog. The suspect is said to have been detained for creating and managing a criminal site that allowed stolen

Cloud Android phones fuel financial fraud, evading detection and enabling dropper accounts

Cybersecurity company’s annual report issues warning over a “mass-marketed impersonation crisis” over attackers abusing legitimate credentials

Cybersecurity researchers have flagged a new evolution of the GlassWorm campaign that delivers a multi-stage framework capable of comprehensive data theft and installing a remote access trojan (RAT), which deploys an information-stealing Google Chrome extension masquerading as an offline version of Google Docs. "It logs keystrokes, dumps cookies and session tokens, captures screenshots, and

The US Federal Communications Commission has placed all “consumer-grade” internet routers produced outside the US on its “covered list”

Python package LiteLLM compromised with credential-stealing malware linked to TeamPCP threat group

In September 2025, Anthropic disclosed that a state-sponsored threat actor used an AI coding agent to execute an autonomous cyber espionage campaign against 30 global targets. The AI handled 80-90% of tactical operations on its own, performing reconnaissance, writing exploit code, and attempting lateral movement at machine speed. This incident is worrying, but there's a scenario that should

The U.S. Department of Justice (DoJ) said a Russian national has been sentenced to two years in prison for managing a botnet that was used to launch ransomware attacks against U.S. companies. Ilya Angelov, 40, of Tolyatti, Russia, was also fined $100,000. Angelov, who went by the online aliases "milan" and "okart," is said to have co-managed a Russia-based cybercriminal group known as TA551 (aka

Cybersecurity researchers are calling attention to an active device code phishing campaign that's targeting Microsoft 365 identities across more than 340 organizations in the U.S., Canada, Australia, New Zealand, and Germany. The activity, per Huntress, was first spotted on February 19, 2026, with subsequent cases appearing at an accelerated pace since then. Notably, the campaign leverages

Expel has warned of malicious Chrome extensions stealing users’ AI conversations

A man has pleaded guilty to defrauding online music streaming platforms out of more than US $8 million, after creating hundreds of thousands of songs with AI, and then using bots to play them billions of times. Read more in my article on the Hot for Security blog.