Multisig Wallet.

A cryptocurrency wallet that requires m-of-n signatures from independent keys to authorise a transaction, removing single-key compromise as a fatal failure. It belongs to the Web3 & Blockchain category of cybersecurity.

A cryptocurrency wallet that requires m-of-n signatures from independent keys to authorise a transaction, removing single-key compromise as a fatal failure.

A multisig (multi-signature) wallet enforces an m-of-n policy on-chain or via a smart contract: a transaction is only valid once at least m of n designated keys have signed it. Common configurations include 2-of-3 for individuals and 3-of-5 or 4-of-7 for treasuries. Multisig protects against single-point compromises such as a stolen hardware wallet, an isolated malware infection, or one team member acting maliciously, because no single key can move funds. On Ethereum and other EVM chains, the Safe contracts (formerly Gnosis Safe) are the dominant standard; Bitcoin uses native multisig and miniscript. Operational risk shifts to signer management, secure transaction review, and clear recovery procedures across geographies.

Defences for Multisig Wallet typically combine technical controls and operational practices, as detailed in the full definition above.

Common alternative names include: Multi-signature wallet, m-of-n wallet.