GhostPoster Campaign is a threat campaign centered on malicious browser extensions named GhostPoster.
GhostPoster Campaign is a threat campaign centered on malicious browser extensions named GhostPoster. The extensions have a large install base (approximately 840,000), highlighting the abuse potential of browser extension ecosystems and the risk of widespread user impact across affected devices.
LayerX has uncovered a significant cybersecurity threat linked to the GhostPoster browser extension. Koi Security's analysis revealed that malicious code was hidden within PNG image files, enabling the extension to…