The decentralized exchange Clipper clarified that there was a vulnerability in its withdrawal function, which led to its protocol being recently attacked by hackers, resulting in a loss of $450,000, rather than a 'third party' claiming a private key leak. Clipper stated: "On December 1st, the attackers exploited two liquidity pools, locking approximately 6% of the total value. A third party claimed there was a private key leak issue. We can confirm that this is not the case and is inconsistent with Clipper's design and security architecture. The withdrawal function in the form of a token (bundled exchange + deposit/withdrawal transactions) has been disabled." Previously, security firm fuzzland co-founder @shoucccc tweeted that Clipper was attacked due to an API vulnerability (such as a private key leak). (Cointelegraph)