Wu said that he learned that OneKey employee @OKxiaohai shared his security rules: 1. Be skeptical of all services that host private keys: no matter how popular they are, only the part of the funds that can afford losses should be stored in the escrow, and rebalance should be done regularly; 2. For all operations that can be slowed down, use a hardware wallet: if the effectiveness of the transaction does not affect the speed at which you make money, put the funds in a hardware wallet; 3. Use various non-open source clipboard tools with caution, and clean up your clipboard from time to time: avoid accidentally authorizing when opening other software. Apps such as Taobao, Douyin, etc. have 10,000 chances to steal the mnemonic phrase in your clipboard; 4. Try to use open source wallets: open source means accepting supervision and traceability. Before using open source, if conditions permit, verify whether the downloaded and published versions are the same; 5. Revoke regularly: clean up wallet authorization every 3 months to avoid potential risks.