An attacker that compromised private keys of Harmony Horizon's multisig-wallet has started laundering stolen cryptocurrency through Tornado Cash, a cryptocurrency mixer.
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Although Harmony has not clarified how much the attacker transferred to the mixer, the team said it is working with "two highly reputable blockchain tracing and analysis partners, and collaborating with the FBI as part of an investigation into this criminal act."
"In parallel, we're reviewing various options for users and partners and will keep you updated as we continue to explore ways to secure the ecosystem. While we cannot go into specifics, our goal is to share information in a timely manner with as much transparency as possible."
iHodl earlier reported that the Horizon cross-bridge has suffered an attack in which a hacker has stolen around $100 million.
An unknown attacker has reportedly stolen the tokens in several transactions, after which he sent them to another wallet and then exchanged them on the decentralized exchange Uniswap. Horizon is a cross-chain bridge between Harmony's blockchain and the Bitcoin, Ethereum and Binance Chain networks.
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