Dozens of Chrome Extensions Hacked, Exposing Millions of Users to Data Theft
Dec 29, 2024
Endpoint Protection / Browser Security
A new attack campaign has targeted known Chrome browser extensions, leading to at least 35 extensions being compromised and exposing over 2.6 million users to data exposure and credential theft. The attack targeted publishers of browser extensions on the Chrome Web Store via a phishing campaign and used their access permissions to insert malicious code into legitimate extensions in order to steal cookies and user access tokens. The first company to shed light the campaign was cybersecurity firm Cyberhaven, one of whose employees was targeted by a phishing attack on December 24, allowing the threat actors to publish a malicious version of the extension. On December 27, Cyberhaven disclosed that a threat actor compromised its browser extension and injected malicious code to communicate with an external command-and-control (C&C) server located on the domain cyberhavenext[.]pro, download additional configuration files, and exfiltrate user data. The phishing email, which purported...