Vitalik Buterin, the co-founder of Ethereum, has weighed in on the debate surrounding the rapid expansion of AI data centers. In a post on X on November 8, 2026, he argued that slowing the growth of these facilities could provide society with valuable time to strengthen its defenses against cyber and biological risks.
Buterin's core argument centers on algorithmic efficiency. He suggested that tasks requiring additional data centers in two years could likely be handled by existing infrastructure within four years, possibly sooner. He also downplayed the potential costs of a slowdown, noting that scientific progress is often limited by factors other than compute power, such as experiment design and data collection.
The Ethereum co-founder framed the trade-off as lopsided: society would sacrifice minimal speed in AI development in exchange for a meaningful window to bolster cybersecurity and reduce biological risks. His tone was pragmatic, avoiding controversial discussions about artificial general intelligence (AGI) posing existential risks.
Buterin's remarks come on the heels of his October 2026 warning that AI advances could weaken lattice-based cryptography within two years. He recommended adopting larger parameters in cryptographic practices to enhance security. Earlier, in September 2026, he highlighted AI's potential to strengthen cybersecurity through formal verification of entire programs, a more robust approach than hunting individual bugs.
For the crypto industry, the most immediate takeaway is the need to revisit assumptions and parameter choices in light of potential threats to lattice-based cryptography. Buterin's argument for slowing data center growth is also seen as a way to give developers more time to adapt. His emphasis on formal verification could address persistent weaknesses in smart contract security.
The weak point in Buterin's case is the assumption that algorithmic progress will continue at a healthy pace. If efficiency gains stall, a slowdown in data center growth could cost more than anticipated. Nonetheless, his intervention adds a prominent voice to the anti-data-center camp, making it harder to dismiss critics as alarmists.