How Does a Multisig Setup Compare to a Single EOA (Externally Owned Account) for Security?
A multisig setup is vastly superior for securing critical functions like contract upgrades. A single EOA is a single point of failure; if the private key is lost or compromised, the contract is at risk.
A multisig requires multiple keys, dramatically increasing the difficulty for an attacker to gain control and providing a buffer against key loss.