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Firefox Extensions

All articles tagged with #firefox extensions

GhostPoster Malware Infects Over 50,000 Firefox Users via Malicious Add-on Icons

Originally Published 27 days ago — by The Hacker News

A campaign named GhostPoster has compromised 17 Firefox add-ons, embedding malicious JavaScript to hijack affiliate links, inject tracking, and facilitate ad fraud, affecting over 50,000 downloads. The malware employs sophisticated evasion techniques, including delayed activation and random payload fetching, to monitor browsing, strip security headers, and enable remote code execution, highlighting ongoing threats from malicious browser extensions.

technology security ad-fraud browser-security firefox-extensions ghostposter malware security

17 Firefox Extensions Offer Free VPN and Tools but Conceal Malware

Originally Published 28 days ago — by cybernews.com

At least 17 seemingly harmless Firefox extensions have been found to hide malware in their icons using steganography, leading to over 50,000 downloads and ongoing infections. The malware can monitor browsing, strip security protections, and open backdoors, with attackers using sophisticated techniques to evade detection. Users are warned to be cautious of such extensions, as many remain available on the Firefox Add-ons marketplace.

technology technology cybersecurity firefox-extensions malware privacy steganography technology