Ethereum co-founder Vitalik Buterin has proposed a shift towards “intent-based security” to boost the safety of Web3 wallets and smart contracts against increasingly sophisticated exploits.
In a series of posts on X on Sunday, 22 February 2026, Buterin argued that security should be redefined as minimizing the divergence between a user’s intention and the actual system behaviour.
He suggested that by integrating transaction simulations and redundant authorization layers, the network could make high-risk actions harder to execute while maintaining a seamless user experience for low-risk operations.
How I think about “security”:
The goal is to minimize the divergence between the user’s intent, and the actual behavior of the system.
“User experience” can also be defined in this way. Thus, “user experience” and “security” are thus not separate fields. However, “security”…
— vitalik.eth (@VitalikButerin) February 22, 2026
The proposal centers on a “transaction simulation” framework where users preview the on-chain consequences of their actions before final approval.
Buterin noted that while “perfect security” is unattainable due to the complexity of human intent, a robust system should require users to specify their goals in multiple, overlapping ways, such as combining a simulation review with spending limits or multi-signature (multisig) requirements.
Strengthening the wallet layer through account abstraction
Buterin’s vision aligns with the ongoing evolution of Ethereum’s 2026 roadmap, which prioritizes “hardening the chain” and improving user experience.
Central to this is EIP-8141, a proposal that advances account abstraction to enable native smart wallets. These wallets allow for custom authorization rules, such as social recovery and gas-sponsored transactions, which move away from the “single point of failure” inherent in traditional private keys.
According to Buterin, the goal is not to add friction for the sake of it, but to ensure that the system only acts when various specifications of intent are aligned.
Ethereum security in 2026
The focus on intent-based security comes at a critical time for the ecosystem. DeFi Planet previously reported that crypto thieves stole $370 million in January 2026 alone, often through phishing attacks that trick users into signing malicious approvals.
By shifting the security focus from “protecting the key” to “verifying the intent,” Ethereum aims to mitigate these tail-risk situations where a single mistake leads to a total loss of funds.
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