A vulnerability was found on the Parity Multisig Wallet version 1.5+ that allowed an attacker to steal over 150,000 ETH (~30M USD) If you are using the affected wallet contract, make sure to move all funds to a different wallet immediately. The OpenZeppelin MultiSig wallet is unaffected by the vulnerability, and is safe to use. The Parity Wallet Hack Explained | In In In Security audits | By By Santiago Palladino, In Security Audiences.”]
Source: https://blog.openzeppelin.com/on-the-parity-wallet-multisig-hack-405a8c12e8f7/