Vitalik: The ideal security rule for multi signature is to change the signer key after each operation

Vitalik stated on the X platform that the ideal security rule for multi signature is for each signer to change the key after each operation. This rule assumes that ECDSA may become insecure but will not be immediately cracked, and still needs to prevent memory pool scrambling. Vitalik stated that if possible, signatures should be collected offline to shorten the time interval between signature disclosure and key expiration. Improper configuration and hasty upgrades can easily lead to financial losses, so do not act hastily.