Svmuu reported that Threshold Network posted on platform X, stating that on May 18, 2026, a malicious attacker attempted to mint tBTC without depositing the underlying Bitcoin. The attempt was unsuccessful; no invalid tBTC was issued, and user funds were not at risk.
As a precautionary measure against high-frequency malicious activity in the broader crypto ecosystem, Optimistic Minting has been temporarily suspended. Currently, minting operations are conducted through the liquidation mechanism, with typical minting times increasing from approximately 1.5 hours to around 6 to 7 hours.