The decentralized transaction protocol Hashflow stated in response to authorization-related events that the affected router contract will be deprecated on May 3, 2022. On the same day, Hashflow notified all users to revoke the license from the deprecated contract through instructions. On June 14, a white hat Starting to transfer assets from wallets that have not properly revoked permission, the current Hashflow router contract will not be affected in any way. Hashflow also issued an instruction for affected users to recover their funds. Yesterday, PeckShield tweeted that Hashflow is suspected to have encountered a grant-related attack, and the current loss is about 400,000 US dollars, of which 195,000 US dollars of loss occurred on Arbitrum, and 215,000 of the loss occurred on Ethereum. Afterwards, Hashflow stated that all affected users of approximately $600,000 will be fully restored.