Harmony plans pre-attack rollback after exploiter forged 3 trillion ONE tokens
Quick TakeHarmony said nearly all of the forged ONE has been traced, but much of it cannot be safely burned.The exploit allowed the attacker to reuse transactions to create new ONE tokens. Harmony plans to roll back its blockchain to a point before last weeks exploit after concluding that more than 3 trillion of the blockchains native ONE tokens were forged. The Layer 1 blockchain said in its latest incident update that validators will roll back Shard 0 and Shard 1, the two chains that make up its sharded network, to just before the confirmed forged mint. All blocks and transactions after that point will be discarded. Harmony said that it considered alternatives, including a token burn, blacklisting affected wallets or even a ONE token (ONE) migration, but concluded that a rollback was the “fairest and most secure” option. “Of the options we studied, one fixed rollback window is the fairest and most secure,” Harmony said. “It applies one rule to everyone, removes the forged state, and carries the lowest risk of another attack or consensus failure.” 3 trillion forged ONE Harmony first confirmed the exploit on Aug. 12 after an unauthorized minting of ONE tokens was discovered. An independent researcher initially identified 4 billion tokens









