China's Ministry of State Security (MSS) has issued a warning regarding the national security risks posed by foreign firms offering cryptocurrency rewards in exchange for iris scans. The alert specifically targets biometric data collection projects like Worldcoin, co-founded by Sam Altman, which incentivize users with crypto tokens to gather iris data. Chinese officials expressed concerns that such schemes covertly collect sensitive biometric information, potentially enabling personal information theft and espionage activities. The MSS highlighted that foreign spies have previously stolen facial data through biometric identification technologies, underscoring the broader security implications. This development reflects China's heightened scrutiny of biometric data usage tied to cryptocurrency incentives. Separately, CoinMarketCap clarified that it does not have any tokens or coins and warned against scams promoting fake CMC tokens.