Data Breaches

GhostPoster Malware Campaign Abuses Browser Extensions to Compromise 840,000 Users

Introduction A long-running and highly covert malware operation known as GhostPoster has been uncovered targeting users of popular web browsers through malicious extensions. The campaign successfully infiltrated official extension stores for Google Chrome, Mozilla Firefox, and Microsoft Edge, silently compromising more than 840,000 users over a period exceeding four years. Background and Context GhostPoster represents […]