Threshold Network’s tBTC bridge has resumed on-chain operations after a nine-day security pause, but an Aave reserve containing approximately $120 million in tBTC remains frozen for new deposits and borrowings against the token.
On Sunday, Threshold said The bridge’s underlying network restarted as node operators restored connectivity with security patches. These independent operators collectively authorize Bitcoin movements and process deposits and withdrawals.
Requests submitted before the shutdown are expected to be processed as more operators return. However, the app will not accept new deposits, mintings, or withdrawals until enough nodes are online. Threshold has not announced a reboot date.
Initial threshold stopped The bridge was closed on October 30 while operators patched a critical vulnerability in the Linux kernel that could allow remote attackers to run code on unpatched servers. The project said it found no evidence that the flaw was exploited against tBTC nodes.
Spirit froze its tBTC reserve on Ethereum Core on October 31st to prevent additional exposure while redemptions were unavailable. The restriction prevents new tBTC deposits and the token from increasing credit power, while existing users can still withdraw and repay loans.
According to Threshold, there are still about 4,320 BTC in Bridge wallets, while about 4,185 tBTC are in circulation, with no unauthorized Bitcoin transfers or token mining detected. Aave risk provider LlamaRisk said it would propose restoring the reserve once Threshold’s operations return to normal.
Related: Threshold: Improved Bridge to Channel $500 Billion of Institutional BTC into DeFi
