AI Could Break Crypto Encryption in Months, Ethereum Researcher Warns Industry

AI Could Break Crypto Encryption Before Quantum Computers

Justin Drake, an Ethereum Foundation researcher, issued a stark warning on Wednesday that AI could break crypto encryption before quantum computing poses a threat. Drake urged the blockchain industry to begin preparing for "bunker mode," arguing that AI-driven mathematical breakthroughs could crack the elliptic curve digital signature algorithm (ECDSA) used by Bitcoin and other cryptocurrencies in months rather than years1

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. By "break," Drake means fast private key recovery within approximately one week on available hardware such as a large GPU cluster1

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The warning centers on ECDSA, the signature scheme Bitcoin and Ethereum use to prove transaction authorization. When a wallet signs a transaction, its public keys become visible on-chain. If ECDSA were broken, an attacker could work backward from that public key to recover the private key and drain the wallet3

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. Drake pointed to OpenAI's Tuesday release of 722 mathematical results as evidence that mathematical superintelligence is advancing rapidly1

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Bunker Mode Strategy and Controlled Migration

Drake recommended that large crypto holders move funds to addresses that have never signed a transaction, keeping public keys hidden behind a hash. He stressed the importance of a controlled, gradual approach, warning that a rushed migration would do more harm than good4

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. According to Drake, sophisticated holders should move the bulk of their funds to fresh addresses, and when they do sign a transaction, they should move remaining funds to a new address5

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Drake specifically urged major platforms including Binance, Bitbank, Robinhood, Bitfinex, and Tether to harden their cold storage. He noted that wallets holding under 50 BTC enjoy partial cover from "Satoshi's shield"—roughly 20,000 exposed addresses tied to Bitcoin's creator, each holding 50 BTC, which would likely be targeted first in any attack1

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Vitalik Buterin Weighs In on Cryptographic Security Risks

Ethereum co-founder Vitalik Buterin said it is "plausible" for AI to break encryption within the next two years. He expressed concern that the industry needs to protect itself from both AI-vulnerable and quantum-vulnerable cryptography2

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. Buterin suggested that lattice-based cryptography, which some projects like Cardano have considered for quantum-proofing, could also be vulnerable to AI attacks. "If AI will bring us 50 years of math in two years, then that 50 years of math may very plausibly include a level of improvement to our ability to break lattices," Buterin stated2

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Isabel Foxen Duke, head of Mara Foundation, a Bitcoin quantum proofing project, explained that breaks in cryptography by classical methods potentially created by AI could affect types of cryptography broadly considered quantum secure, such as lattice-based cryptography2

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. Buterin now believes hash-based cryptography is a better route for quantum-proofing, though he acknowledged that AI-driven math could theoretically break hashes too2

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Cryptographers Push Back Against Fear Mongering

The sharpest rebuttal came from Yehuda Lindell, head of cryptography at Coinbase and a professor of computer science at Bar-Ilan University. Lindell, an IACR Fellow and 2026 recipient of the RSA Conference Award for Excellence in the Field of Mathematics, called Drake's warning "fear mongering." He argued there is no evidence whatsoever pointing to a break of decades-old hardness assumptions like elliptic curve cryptography1

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. "Models proving theorems do not show that problems assumed to be hard are not," Lindell wrote, adding that "throwing out - AI is doing amazing math so elliptic curve hardness is in danger has no logical basis whatsoever"1

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Adam Back, Satoshi-candidate, cryptographer, inventor of hashcash, and co-founder and CEO of Blockstream, dismissed Drake's post as a "fud-burger"1

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. Rob Hamilton, CEO of bitcoin custody firm AnchorWatch, questioned which piece of the math was actually degrading, calling it "a strict hypothetical 'math may break'" and asking for meaningful progress on math related to ECDSA that would raise concern1

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Post-AI Cryptography and Ethereum's Roadmap

Drake stated that exiting bunker mode safely will require post-AI cryptography. His inclination is to go all-in on hash-based cryptography and avoid structured mathematical assumptions entirely, whether from curves, lattices, or isogenies5

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. Drake said he would push to accelerate the Ethereum roadmap toward hash-based cryptography, emphasizing maximum defensive acceleration3

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The Ethereum Foundation formed a dedicated post-quantum team earlier this year led by Thomas Coratger, which Drake referred to as an inflection point as the foundation made post-quantum security a top priority after years of quieter work1

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. Drake argued that elliptic curves feel especially vulnerable to mathematical superintelligence because curves carry rich structure with room for fancy tricks like Schoof, Frobenius, and pairings, whereas hashes are designed to minimize algebraic structure4

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Ananda Banerjee, founder of analytics firm Charlie Quant Lab, advised caution without treating Vitalik Buterin's two-year scenario as a deadline, stating the posts don't demonstrate these systems have been broken and recommending careful preparation rather than rushing to move funds2

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. The debate highlights the tension between proactive security measures and avoiding unnecessary panic in an industry where threaten crypto wallet security concerns must be balanced against practical operational needs.