Developers Warned As Fake Claude Code Installer Attacks Confirmed

InnovationCybersecurityDevelopers Warned As Fake Claude Code Installer Attacks ConfirmedByDavey Winder,Senior Contributor.Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst.Follow AuthorMay 12, 2026, 08:51am EDT--:-- / --:--This voice experience is generated by AI. Learn more.This voice experience is generated by AI. Learn more.Beware the fake Claude Code installer threat.gettySecurity researchers have uncovered a previously undocumented attack campaign targeting developers, using a payload that steals passwords, cookies and even payment methods. It combines fake developer tools, including Claude Code installers, with a sneaky method for recovering Chromium-based browser App-Bound Encryption keys. One security expert told me that this threat warrants an immediate and effective actionable response. Another that it highlights the danger of agent-based and manual installation processes. Here’s what you need to know. Forbes‘Significant Threat’—Billions Of Gmail Users At Risk From Google Security GaffeBy Davey WinderCounterfeit Claude Code Installers Abuse Browser IElevator2 COM Interface To Steal PasswordsGoogle Chrome has 127 new security vulnerabilities, but this isn’t one of them. Indeed, while the world’s most popular web browser has already issued an update to patch those bugs, the high-impact vulnerability uncovered by the Ontinue Cyber Defense Center remains exploitable. Specifically targeting developers, Rhys Downing, a threat researcher at Ontinue, has confirmed that the attack campaign leverages “fake installation pages that mimic popular developer tools, including counterfeit Claude Code installers.” Downing has published a report explaining exactly how one such fake Claude Code installer is able to steal credentials from Chromium-based web browsers, including Chrome.People who search for “install Claude code” and then select a sponsored result find themselves on what appear...