Anza Proposes Ban on Solana Durable Nonces After $295.7M Drift Exploit

The proposed ban targets a core Solana primitive whose legitimate use cases — chiefly custody and pre-signed transaction workflows — are exactly the institutional segments the chain has been courting. That puts a security fix on a collision course with custody product design, and the long activation delay signals Anza is treating migration cost as a first-order concern rather than an afterthought. The open question is whether the six-month adaptation window proves adequate for custodians, and whether disabling a feature tied to a nine-figure exploit sets a precedent for how Solana handles primitives with dual-use risk.