On September 19–20, 2026, the SingularityNET Ethereum–Cardano bridge was compromised when an attacker with admin signing keys minted millions of unbacked tokens (FET, AGIX, WMTX, NTX, CGV) without burning collateral, draining approximately 8.7 million FET and creating billions in unsupported supply across tokens. The bridge was subsequently shut down as a precaution, though closing the website did not revoke the compromised keys that enabled the unauthorized minting.