Threshold Network has officially initiated the restart of its tBTC bridge onchain operations following a nine-day emergency security pause. The temporary halt was implemented to allow network operators to address a critical Linux kernel vulnerability that posed potential security risks across unpatched servers. Despite the protocol's core network coming back online, a major lending reserve on Aave holding roughly $120 million in tBTC remains restricted to new transactions.
The underlying security issue was identified on October 30, prompting Threshold to halt bridge operations as a precautionary measure against potential remote code execution exploits. Subsequent security audits confirmed that no unauthorized access, illicit token minting, or fraudulent Bitcoin transfers occurred during the operational pause. According to network figures, approximately 4,320 BTC remains fully backed in bridge reserve wallets against roughly 4,185 tBTC tokens currently in circulation across the crypto ecosystem.
Network reactivation relies on independent node operators who collectively authenticate Bitcoin movements, deposits, and redemptions. As these operators complete necessary security patches and reconnect to the network, backlog requests submitted prior to the shutdown will be processed gradually. However, the user interface will not accept fresh deposits, new token minting, or redemptions until a sufficient threshold of patched nodes returns online. Threshold has not yet designated a definitive timetable for complete service restoration.
Concurrently, decentralized finance protocol Aave enacted a freeze on its tBTC reserve on Ethereum Core on October 31 to mitigate collateral risk while redemptions were paused. Under current restrictions, users cannot make new tBTC deposits or utilize the asset to expand borrowing capacity, though existing borrowers retain full capability to repay outstanding loans and withdraw collateral. Risk evaluation firm LlamaRisk announced plans to submit a formal governance proposal to restore Aave's tBTC market once Threshold's operations fully return to normal conditions.
