GhostPoster Malware Infects 17 Firefox Add-ons with Over 50,000 Downloads

GhostPoster Malware Infects 17 Firefox Add-ons with Over 50,000 Downloads

First seen 18 Dec 2025, 18:53 UTC •ThehackernewsTomsguide •90% similarity •30.6

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GhostPoster malware has been detected in 17 Firefox browser add-ons, collectively downloaded over 50,000 times. This malware poses risks to users by potentially compromising their data and privacy. The incident highlights the increasing sophistication of cloud threats targeting browser extensions.

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GhostPoster Firefox Kubernetes