Justin Drake calls for “bunker mode”: AI could break ECDSA before quantum computers do

Author: Crypffalo Research · 17:50 08/10/2026

Ethereum Foundation researcher Justin Drake warns AI could break the ECDSA signatures behind Bitcoin and Ethereum before Q-Day, and urges a calm, gradual move to addresses with unexposed public keys. There is no evidence AI has broken the cryptography yet.

Justin Drake calls for “bunker mode”: AI could break ECDSA before quantum computers do

On Oct 7, 2026, Ethereum Foundation researcher Justin Drake posted on X calling on the blockchain industry to "calmly begin planning for bunker mode": preparing to gradually move assets to addresses whose public keys have never been exposed. Bankless shared the warning widely, and within hours Ethereum co-founder Vitalik Buterin weighed in on the same topic (see: Vitalik warns AI could break cryptography faster than expected).

What happened?

According to Drake, ECDSA, the signature scheme Bitcoin and Ethereum use to secure wallets, could be broken before "Q-Day" (the day quantum computers become powerful enough), "in the worst case in months not years".
He defines a "break" as an attacker recovering a private key from a public key in about a week using available hardware such as a large GPU cluster.
The reason: AI is advancing fast in mathematics. Drake pointed to OpenAI publishing 722 math manuscripts (across 372 result families) on Oct 6. He wrote that "mathematical superintelligence is upon us" and that elliptic curves (the basis of ECDSA) feel especially vulnerable.

What is "bunker mode"?

When an address sends its first transaction, its public key is revealed on the blockchain. An address that has only received funds reveals just a hash, so its public key stays hidden.
If ECDSA were broken, wallets with exposed public keys could have their private keys derived and be drained. Wallets with hidden public keys are far safer in that scenario.
"Bunker mode" means gradually moving assets to fresh addresses that have never signed a transaction. It requires no new cryptography or new wallets and can be done with today's tools.

What does Drake recommend?

Stay calm, don't panic, don't rush. A poorly managed migration can create its own risks.
Large holders and institutions should go first. Drake named Binance, Bitbank, Robinhood, Bitfinex and Tether, urging them to review their cold-storage setups.
For Ethereum, he will push for "maximum defensive acceleration" of the roadmap toward hash-based cryptography.

Context

Drake has warned about quantum computing for years. On the Bankless podcast in March 2026, he estimated Q-Day could arrive around 2032 and set a target of Ethereum being fully post-quantum secure by 2029, mainly through hash-based signatures.
What is new this time: the concern is an AI-assisted attack on ordinary hardware, which could come sooner than quantum computers.
The Ethereum Foundation formed a Post-Quantum Security team in January 2026. According to Project Eleven (Sept 14 update), more than 8.1 million BTC sits in addresses classified as quantum-vulnerable.
Vitalik Buterin agrees the risk should be taken seriously, but stresses he does not recommend scrambling to move funds today and has personally lost more money in botched migrations than in hacks. Details in Vitalik warns AI could break cryptography faster than expected.

What should crypto users do?

This is a hypothetical scenario; there is no evidence that AI has broken Bitcoin or Ethereum cryptography.
Check whether the addresses holding most of your funds have ever sent a transaction. If they have and moving is simple, consider moving gradually to fresh addresses, always testing with a small amount first.
Avoid reusing one address for large amounts. Funds held on exchanges depend on how each exchange stores them.
Follow Bitcoin and Ethereum prices and data on Crypffalo to track the market's reaction.

*For information only, not financial advice.*

Tags: Ethereum, Justin Drake, Wallet Security, Quantum, AI, Bitcoin

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