Decentralized Exchange Hashflow Hacked, Seems to Be White-hat Op

According to PeckShield, decentralized exchange Hashflow was hacked due to an approval-related issue, but it seems to be a white-hat op.

According to 0xScope, the creator of the theft contract left a message in the transaction, "Before use recover, please revoke first. Your funds are not safe."

Hashflow then said on Twitter that the funds affected were around $600k, and all affected users would be made whole. In addition, the Hashflow DEX was not impacted and remains fully operational. Hashflow released a recovery instruction for users to recover funds, and reminded them that they must first revoke approvals before recovering funds. Users who were not impacted but used Hashflow prior to May 3rd, 2022, need to revoke any allowances from deprecated contracts ASAP.