Ethereum co-founder Vitalik Buterin rejected claims that artificial intelligence will cause cybersecurity to collapse, arguing that rigorous security work remains fundamentally favorable to defense. He said his continued cryptocurrency holdings, worth about 90% of his net worth, reflect that belief. Buterin argued that if AI can prove the Navier-Stokes equations and Fermat's Last Theorem, it could also prove that a complex program is secure as a mathematical theorem. He said AI makes it both necessary and possible to verify entire programs, including databases, networks and caches, rather than only components presumed to be security-critical. The approach would emphasize proactively writing more attack-resistant code instead of relying on defenders to find vulnerabilities before attackers. Buterin described stronger software security as a core direction for Ethereum in the coming years, saying blockchains—particularly those combining scalability and privacy—would have no future without it.