The Developers of Sidechain Ronin Reveal Additional Details on $625M Hack

The developers of the Ronin sidechain, which is involved in the Axie Infinity blockchain game, have revealed additional details of the hack that led to the theft of more than $600 million in crypto.

On March 23, 2022, Ronin was hacked. Notably, a hacker stole 173,600 ETH and 25.5 million USDC from the cross-chain bridge of the project.

As a result of a phishing attack on one of the employees of Sky Mavis, the company behind the development of Axie Infinity, the attacker managed to gain access to both the company’s infrastructure and the Ethereum sidechain validators.

At that time, Sky Mavis controlled four of the nine validators. This was not enough for an unauthorized withdrawal of funds. However, an exploit linked to the Ronin gasless RPC node allowed the hacker to acquire the signature of the Axie DAO validator.