#加密安全须知 🔐 1. Key Security Management

Offline Storage: Private keys/mnemonic phrases should not be captured via screenshots, network transmission, or cloud storage, and should only be backed up using physical media (such as metal mnemonic boards).

Distributed Backup: Utilize the '3-2-1 principle' (3 copies of backup, 2 types of media, 1 copy stored off-site) to prevent loss.

Key Rotation: Regularly update keys to avoid using the same key for extended periods.

🛡️ 2. Encryption Technology and Algorithms

Strong Algorithms First: Choose strong collision-resistant encryption standards like AES (256-bit), SHA-256, and discard outdated algorithms like DES and MD5.

End-to-End Encryption: Use SSL/TLS protocols (such as HTTPS, SSH) for communication to prevent sniffers from eavesdropping on plaintext data.

Multi-Factor Authentication: Combine password + dynamic token (e.g., Google Authenticator) or biometric (fingerprint/iris) to reduce single point of failure risks.

⚠️ 3. Operation and Protection Standards

Transaction Verification: Check the first and last characters of the address before transferring; perform a small test transaction first; be wary of scam phrases such as 'skip guarantee' or 'private settlement'.

Least Privilege: Regularly revoke idle DApp authorizations with Revoke.cash, with single project authorization limits ≤ 20% of wallet total.

Device Isolation: Separate transaction and storage wallets, use dedicated devices for encryption operations, and avoid public WiFi.

🧩 4. System and Awareness Defense

Update Maintenance: Timely patch vulnerabilities in encryption libraries (e.g., OpenSSL's Heartbleed vulnerability) and disable backdoor algorithms.

Anti-Phishing Strategy: Download software from official channels and verify file hash values; refuse links/DM messages from unknown sources.

Security Training: Enhance employees/users' awareness of key protection and protocol risks.

💡 Summary: Encryption security needs to cover four layers of defenses: algorithm strength, key management, operational standards, and continuous education, with the core principle being 'zero trust'—assuming all links have risks and mitigating the attack surface through dual reinforcement of technology and processes.