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Source of Clarity - Deployed Clarity Contracts
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Stealing STX with a Dragon

On Dec 13th, there were two suspicous contracts deployed that interacted with the byzantion marketplace v5  contract and was named as stacks-art-market: bad actor 1  , bad actor 2  .

It turned out that the two contracts together could extract 1644 STX from the escrow of open bids that were not placed by the attacker.

A new version of byzantion marketplace has been deployed since that prevents these exploits. Read more about the byzantion marketplace protocol.

Draining the contract

The effected contract was v1-1  . In the updated version, new swapping pairs can only added by the admin. In addition, a shut down flag was added.

The comparison between the two contracts can be studied at git commit 82c8c47 .