GhostPoster Malware Hides Malicious Code in Logos of 17 Firefox Extensions
533/68 Thursday, December 18, 2025 Cybersecurity researchers have uncovered a new malware campaign dubbed “GhostPoster”, which was distributed through 17 Firefox browser extensions with a combined total of more than 50,000 downloads. The malware uses steganography to conceal malicious JavaScript code inside the image files used as extension logos, allowing it to evade browser security […]
