
- Koi Security researchers found almost two dozen browser add-ons spying on users
- The add-ons were tracking visited sites and communicating with remote C2 infrastructure
- Users were likely compromised along the way
Many Google Chrome and Microsoft Edge browser add-ons, including several prominent products, were found to be spying on users and communicating with a third-party server, in what appears to be a supply-chain attack with millions of victims.