According to CoinMeta, Wu said that CTO indicated that they had screened 904 applications marked as non-hosted cryptocurrency wallets in App Store, analyzed 494 of them, and ultimately identified 45 that may have serious or high-risk security issues. Among these, 23 were considered to have potential serious risks, and 22 were high-risk. The main issues included suspected uploads of mnemonic phrases or private keys, use of weak random number generation for wallets, server-side storage of keys, hardcoding of encryption keys, and the loading of unsigned JavaScript that could access sensitive wallet information. He also reminded that there might be false positives in this analysis, and that the App Store review process and the popularity of the applications themselves do not guarantee the security of the wallets.