Lifehacker: “Another wave of malicious browser extensions capable of tracking user activity and compromising privacy have been found across Chrome, Firefox, and Edge, some of which may have been active for up to five years. The campaign, known as GhostPoster, was identified by Koi Security in December and included 17 Firefox add-ons designed to monitor users’ browsing activity. Threat actors planted malicious JavaScript code in the extension’s PNG logo, which served as a malware loader to retrieve the main payload from a remote server. Researchers at LayerX have found an additional 17 malicious extensions across multiple browsers that have collectively been installed more than 840,000 times…”