BlockBeats News, April 15th, ZKsync announced that the "ZKsync security team has discovered a stolen administrator account, which controlled approximately $5 million worth of ZK tokens—these tokens are the remaining tokens from the ZKsync airdrop that have not been claimed. Necessary security measures are currently being taken.
All user funds are secure and have never been at risk. The ZKsync protocol and ZK token contract remain secure, with no additional ZK tokens at risk. This is an isolated incident triggered by the stolen key, limited to the ZK token airdrop contract.
An investigation is currently underway, detailed updates will be shared later today."