Ravie LakshmananAug 28, 2026Web Security / Supply Chain
Cybersecurity researchers have discovered a cluster of 18 Google Chrome and one Microsoft Edge extensions that were published over the last six months and harbored wallet secret stealing and cryptocurrency draining capabilities.
The extensions, per Socket security researcher Karlo Zanki, share similarities in code and tradecraft, with evidence indicating that the campaign may have been active since February 2024. Socket is tracking the activity under the name Superior.
The modus operandi is relatively straightforward: the threat actor either acquires legitimate extensions with proper functionality or pushes a clean version that's devoid of any malware. Once the extensions begin to gather user downloads, a new version with the malicious behavior is published.
Of the identified extensions, 14 were created by the threat actor, while the remaining five were purchased from their previous owners. The complete list of extensions is below -
