What Is EIP-7702? Ethereum's Smart Account Feature Explained, and How to Stay Safe - HackerNoon

November 1, 2026 Malcolm Knoll ethereum

What Is EIP-7702? Ethereum's Smart Account Feature Explained, and How to Stay Safe | HackerNoon

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What Is EIP-7702? Ethereum's Smart Account Feature Explained

By MEXC Learn

MEXC Learn is an educational platform that helps users understand crypto trading, blockchain basics, and Web3 concepts.

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October 31st, 2026

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Story's Credibility

by MEXC Learn

MEXC Learn is an educational platform... (as above)

Story's Credibility: Original Reporting

This story contains new, firsthand information.

  • On October 29, 2026, an Ethereum hot wallet belonging to Binance was emptied in a single transaction.
  • The tool was EIP-7702, an Ethereum feature introduced in May 2025.
  • As of October 30, 2026, no flaw in EIP-7702 itself has been reported.

Key Takeaways

  • EIP-7702 allows a regular Ethereum wallet to run smart contract code (went live May 7, 2025).
  • Token approval covers one token for one app, while EIP-7702 delegation gives a contract access to your entire account.
  • Each delegation requires the wallet's own signature, making the Binance hack a signing issue, not an Ethereum bug.
  • Exchange users should monitor official notices, withdrawal status, proof of reserves, and a post-mortem.
  • Self-custody users only face EIP-7702 risk if they signed a delegation (visible on Etherscan's Delegated Address field).
  • A delegation can be reset to the zero address, but if you can't recall signing it, treat the wallet as compromised.

What Is EIP-7702?

EIP-7702 is an Ethereum upgrade enabling a regular crypto wallet (Externally Owned Account or EOA) to borrow smart contract code and function like a smart account.

  • Shipped with the Pectra upgrade (May 7, 2025).
  • EIP-7702: Set Code for EOAs (the official specification) adds a new transaction type with signed "authorizations".
  • Each authorization names a contract, the chain it covers, and the wallet's nonce.

How Does EIP-7702 Work?

It involves a signature:

  1. Sign an authorization naming a contract, its chain, and your account's nonce.
  2. Submit the authorization to Ethereum (a third party can pay the fee).
  3. The network records a "delegation indicator" on your account.
  4. Subsequently, your address executes the contract code while your private key controls the account.
  5. Reset the delegation to the zero address** to revert to a standard wallet.**

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