Chrome and Firefox Extensions Posing as Free VPNs Add Clipboard Stealers via Malicious Updates

Reported 30 Jun 2026 by otx · Severity: medium

Malicious browser extensions distributed through Chrome Web Store and Firefox Add-ons marketplaces posed as free VPN services while secretly stealing clipboard data. The Chrome extension, with 146 users, and Firefox extension, with 3,499 users, initially functioned as proxy tools