Hackers stole $484,000 by inserting malicious code into the Github library for Connect Kit, a widely-used piece of blockchain software maintained by crypto wallet firm Ledger. Several major DeFi protocols that use the library have been impacted, and users have been warned to avoid using dApps until the protocols are updated. Ledger has confirmed that an employee was targeted in a phishing attack, after which the attacker published a malicious version of the Ledger Connect Kit. To completely mitigate the risk, every protocol using Ledger's Connect Kit must manually update their version of the library.