In the digital age, encryption technology is an important barrier to protect information security. When using encryption, be sure to choose verified algorithms such as AES-256 or RSA-2048, and avoid using outdated algorithms that have been cracked. Key management is crucial; strong passwords should be used and changed regularly, and keys must never be stored in plain text. Pay attention to the security of encrypted data transmission, and always use SSL/TLS protocols. Be vigilant against man-in-the-middle attacks and verify the authenticity of digital certificates.