I'm reading the news from the EF—they've created a special task force against the quantum threat. And I think: seriously, already? It would seem that quantum computers are something from the distant future, but here suddenly it's a "strategic priority." But when you dig deeper, it's hair-raising.
The point is that a quantum computer, when it reaches the required level, will be able to crack the elliptic curve cryptography that underpins the security of Ethereum and almost all blockchains. Wallet keys, transaction signatures—all of this will become vulnerable. And this is not a question of "if," but a question of "when." Estimates vary: optimists talk about 10-15 years, paranoids say the first attacks could happen as early as 2028.
The nastiest part is the "harvest now, decrypt later" scenario. Malicious actors could already be collecting encrypted data (e.g., transaction signatures) to crack it later, once quantum computers are available. A quiet preparation for a rout.
And the EF, apparently, decided that waiting is no longer an option. They're not just "studying the issue"—they're throwing millions of dollars and their best cryptographers at solving it. They announced a $1M prize for strengthening the Poseidon hash function, invested $12M in zk-STARKs (this technology is also quantum-resistant). They've assembled a team, launched workshops, even dedicated a separate day at Devconnect in Cannes in 2026 to this topic.
The detail that impressed me the most was about AI: a researcher working with the EF used a specialized mathematical AI for 8 hours and $200 to formally prove one of the most complex lemmas for hash-based SNARKs. This speaks to the level and speed of the work.
The question that arose for me isn't even technical. All of this is a giant, expensive, and complex job of changing the cryptographic foundation of a moving train called Ethereum. How do you carry out this upgrade with "zero loss of funds and zero downtime," as they promise? Can the community, exchanges, wallets, all dApps synchronously transition to new, post-quantum standards? Or are we in for a painful hard fork, a split, and chaos?
Here's what I'm thinking: are we, as an industry, ready for the very basis of our security to require replacement? Or will the quantum threat remain a convenient boogeyman to allocate budgets to for years?