An architectural breakdown of the ERC-7579 standard, explaining how modular validator plugins enable frictionless post-quantum upgrades.
Early smart contract wallets (like Safe and Biconomy) were monolithic contracts. Adding new cryptographic signature schemes required redeploying entire wallet codebases. ERC-7579 standardizes a modular interface: separating accounts into execution cores and pluggable modules (Validators, Executors, Hooks, and Fallback handlers).
We explain the technical mechanics of installing a post-quantum validator module into an existing ERC-7579 smart account. Users can transition their wallet from classical ECDSA to hybrid X25519MLKEM768 or pure ML-DSA-65 with a single on-chain transaction.
Security best practices for reviewing third-party validator plugins, verifying module isolation, and preventing malicious hook injection.