Threats Tagged 'browser extension campaign'
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Threats Tagged 'browser extension campaign'
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A coordinated campaign involving 77 Firefox browser extensions has been identified, targeting cryptocurrency users by stealing wallet secrets and credentials. The campaign, named 'Offside Wallet Theft Factory,' includes 40 confirmed malicious extensions that exfiltrate sensitive data such as recovery phrases and private keys via Supabase-controlled remote switches, Cloudflare Workers, and hardcoded command-and-control infrastructure. An additional 37 extensions initially appeared benign but evolved into wallet-stealing malware. The operation ran from at least March 2026 through August 2026 and impersonated popular Web3 products like OKX, Rabby Wallet, and TronLink. The extensions use phishing interfaces, modified wallet code, and direct credential theft to enable immediate cryptocurrency theft and financial loss. Join the discussion | AlienVault OTX General | 08/20/2026, 01:03:13 UTC Added: 08/20/2026, 08:22:26 UTC |
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