Boltz suspends Bitcoin swaps indefinitely as AI-assisted attacks outpace security fixes

Aug 3, 2026

Bitcoin bridge Boltz has indefinitely suspended its swap services after a surge in AI-assisted attacks. The company stated attackers were iterating faster than its small team could deploy patches. While no user funds were lost due to Boltz's non-custodial design, the shutdown has disrupted services like Aqua Wallet and Bull Bitcoin, highlighting growing security risks for open-source crypto projects.

Boltz service suspension

▪The service allows users to move Bitcoin between the main blockchain, the Lightning Network, and the Liquid Network.
▪Boltz, a non-custodial Bitcoin bridge, has indefinitely suspended its swap services as of August 3, 2026.
▪Boltz confirmed no user funds were at risk due to its non-custodial design, and any financial losses were absorbed by the company.
▪According to DeFiLlama, Boltz had a total value locked of approximately $262,000 at the time of the shutdown.

AI-assisted hacking attacks

▪A similar trend involves the Coldcard hardware wallet, where an AI-linked exploit led to the theft of over $100 million in Bitcoin.
▪The suspension was a response to a steady rise in automated, AI-assisted attacks from "multiple resourceful groups."
▪The pace of attacks against Boltz saw a "drastic acceleration" in the days immediately before the service was suspended.
▪The company clarified the shutdown was not due to a single incident but a pattern of several contained exploits over recent months.

Impact on Bitcoin ecosystem

▪Bull Bitcoin warned its users that Lightning payments and Liquid-to-Bitcoin swaps would "fail without explanation."
▪The suspension disrupted services for wallets that rely on Boltz, including Bull Bitcoin, Aqua Wallet, and ZEUS.

Security challenges for small teams

▪Boltz described the situation as a "major paradigm shift for Bitcoin services operating on an open source stack."
▪Swan co-founder Yan Pritzker said the overhead for security against AI attackers may "price out many innovative startups."
▪Lucas Ferreira of Vinteum noted that Boltz is a small but "brilliant team" facing sophisticated, AI-powered hacking groups.
▪Boltz stated that attackers now "iterate faster than a team our size can find and patch" vulnerabilities.
▪Solana Foundation's CISO Michael Coates said the industry must switch to automated defenses as humans cannot scale to meet AI-powered threats.