Be sure to choose verified algorithms such as AES-256 or RSA-2048, and avoid using outdated algorithms that have been compromised. Key management is crucial; strong passwords should be used and changed regularly, and keys should never be stored in plaintext. Pay attention to the security of encrypted data during transmission and always use SSL/TLS protocols. Be vigilant against man-in-the-middle attacks and verify the authenticity of digital certificates. Regularly update encryption software to patch vulnerabilities and avoid side-channel attacks.