Polymarket Denies Hacking Claims, Says Alleged Leak Is Public On-Chain Data

Source

JOON HYOUNG LEE

Summary

Polymarket said recent hacking allegations were "complete nonsense" and that there had been no data leak involving user information.
Polymarket said the information the hacker was trying to sell was already publicly accessible on-chain data, adding that it was "not a bug, but a feature."
The allegation emerged as losses from Web3 project hacks and fraud across the crypto industry reached $482 million.

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Polymarket has flatly denied recent claims that it was hacked.

Cointelegraph reported on April 28 that Polymarket, in a post on its official X account, called the allegation "complete nonsense." The platform said the information posted by the hacker was already publicly accessible online and suggested the person was trying to sell data that it provides to developers for free.

Earlier that day, cybersecurity firm Vecert Analyzer and others shared information posted on the dark web. In that post, a hacker using the alias "xorcat" claimed to have breached Polymarket and obtained more than 300,000 data records, including user information.

Polymarket said the benefit of an on-chain service is that all data can be publicly audited. It added that this was "not a bug, but a feature," and said no data had been leaked. All of the information cited by the hacker, it said, could be accessed through on-chain data and other public sources.

The allegation surfaced as concern over hacking in the broader crypto industry has grown. Blockchain security firm Hacken said losses from hacks and fraud involving Web3 projects totaled $482 million in the first quarter.