Several Ethereum-based decentralized applications (dapps), including Zapper, SushiSwap, Phantom, Balancer, and Revoke.cash, were compromised due to a security breach at Ledger, a Paris-based crypto hardware wallet manufacturer. Ledger has fixed the malicious code and warned users to "Clear Sign" transactions to ensure they are interacting directly with the company's website and software. The extent of the damage and the amount of money lost is not yet known, but reports suggest that the exploit is widespread. The breach highlights the need for proper auditing and testing in the decentralized finance (DeFi) ecosystem, where financial software is frequently deployed without appropriate measures.