Most institutions understand that MPC distributes signing authority. Fewer ask what happens if the signer approves a risky transaction. What MPC actually changes about signing security: ◾️In traditional signing, a complete private key exists and must be protected at all times ◾️In multi-sig, multiple complete keys exist, each representing a separate point of compromise ◾️In MPC, no complete private key ever exists at any point in the signing process ◾️Signing happens through a computation across separate key shares held by independent parties ◾️Compromising one share produces nothing an attacker can use For institutions evaluating signing infrastructure, this distinction changes the threat model entirely. There is no single target to compromise. #MPC #MultiPartyComputation #SigningSecurity #DigitalAssetCustody #InstitutionalCrypto #Liminal