The North Korean Lazarus Group successfully stole $1.5 billion from ByBit's cold wallet due to a compromised Safe multisig wallet interface, allowing legitimate-looking transactions. Instead of assigning blame, the focus should be on reinforcing security measures. By utilizing modules and guards within the Safe wallet, users can enhance security by restricting transaction types and requiring additional signatures for high-value transactions, potentially minimizing losses and preventing future attacks. This incident highlights the importance of securing the underlying technology beyond just the wallet interfaces.
It later turned out that the Safe UI had been compromised. The attackers obtained AWS S3 credentials from a developer's machine, allowing them to modify the UI.
One of the best features of a Safe wallet is that its capabilities can be extended using modules and guards. Modules add functionalities, while guards perform checks before transactions.
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