The Federal Bureau of Investigation (FBI) has issued a warning about a recent cryptocurrency hack on the Bybit exchange, linking it to a known threat actor from North Korea. The agency is now urging users to take action to prevent further transactions with compromised addresses.

In April, hackers stole over $1.5 billion worth of cryptocurrency from Bybit, one of the largest cryptocurrency exchanges in the world. The hack was attributed to a compromise on the Safe wallet system used by some users. Gnosis Safe, the developer of the Safe wallet, acknowledged that one of its developers' machines was compromised, allowing the hackers to access sensitive information.

The FBI has now linked the Bybit hack to a known threat actor from North Korea, identified as 'TraderTraitor'. In response, the agency is calling on private sector entities, including RPC node operators, exchanges, bridges, blockchain analytics firms, DeFi services, and other virtual asset service providers, to block transactions with or derived from addresses used by TraderTraitor.

The FBI is urging users to take a proactive role in preventing further transactions with compromised addresses. This involves blacklisting wallet addresses associated with the TraderTraitor threat actors. The agency believes that by working together, they can significantly reduce the risk of North Korea's cybercrime networks laundering stolen assets.

The Bybit exchange has taken swift action to respond to the hack, repaying all loans secured from other exchanges and restoring its ETH reserves to normal within days. Binance founder CZ was critical of Gnosis Safe's initial statement on the hack, questioning their lack of transparency and cooperation with other players.

Martin Koeppelmann, founder of Gnosis Safe, responded to criticisms by stating that they had been monitoring transactions associated with the hack and were working to prevent further compromise. He acknowledged that one of the hacked Safes was indeed one of the largest managed by the platform, but vowed to improve their security measures.

The Bybit hack did not have a significant immediate impact on the market, as the exchange swiftly responded to the incident. However, the event led to a surge in ETH prices to $2.8K, only to drop back to $2.2K amid inflation fears and concerns about President Trump's tariffs plans.

The Bybit hack is a stark reminder of the ongoing threat posed by North Korea's cybercrime networks. The FBI's call for collaboration among private sector entities to block transactions with compromised addresses highlights the need for industry-wide cooperation in preventing such incidents. As the cryptocurrency market continues to evolve, it's essential that users and exchanges take proactive measures to protect themselves from emerging threats like this one.