According to PANews, SlowMist's Cosine highlighted on the X platform the importance of enabling two-factor authentication (2FA) for wallets based on Privy. Although Privy uses a Shamir's Secret Sharing (SSS) scheme to generate and manage user shard private keys, the actual plaintext private key is ultimately restored on the target frontend, existing within an independent iframe context. This underscores the necessity of additional security measures such as 2FA to protect users' assets.