Crypto News
Solana is moving to retire durable nonces, the feature behind April's $270M+ Drift hack. SIMD-0723, filed Nov 5 by core developer Anza, would remove support for signed transactions that never expire, unlike standard Solana transactions which go stale in roughly 30 seconds. The earliest switch-off date is May 5, 2027.
Why it matters
Durable nonces let a signed transaction remain valid indefinitely, and that property is what tied them to the $270M+ Drift exploit, one of the largest hits Solana DeFi has absorbed. Stripping the feature from the protocol closes off an entire class of attack rather than patching a single bug.
The filing also lands amid growing ecosystem friction, with backlash around Pump.fun adding pressure on Solana core developers to show the network's security roadmap is moving. The multi-year runway reflects how Solana ships changes: proposals pass through open governance and coordinated validator adoption, so even a security-motivated SIMD takes time to activate.
Market impact
For traders, the signal is directional rather than immediate: the network's most credible developers are acting on a demonstrated exploit vector, which strengthens the protocol-security case for SOL at a moment when the ecosystem has been taking reputational hits. What to watch next is governance discussion around SIMD-0723 and whether the May 2027 timeline can be pulled forward.
Frequently asked questions
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What are durable nonces on Solana?
They are signed transactions that never expire, unlike standard Solana transactions which go stale in roughly 30 seconds. SIMD-0723 proposes retiring them entirely.
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What is SIMD-0723?
A Solana improvement proposal filed Nov 5 by core developer Anza to remove durable nonces from the protocol, with the earliest switch-off date set for May 5, 2027.
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How does SIMD-0723 relate to the Drift hack?
Durable nonces were the feature behind April's $270M+ Drift hack, one of the largest exploits in Solana DeFi. Retiring them closes the mechanism tied to that attack.
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When would durable nonces be switched off?
The earliest switch-off date in the proposal is May 5, 2027, reflecting the time Solana protocol changes need to pass through governance and validator adoption.
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Why does the rollout take until 2027?
Solana ships protocol changes through open governance and coordinated validator adoption, so even security-motivated proposals like SIMD-0723 have a long activation path.
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