Protecting cryptocurrency assets requires multiple layers of defense. First, store the majority of assets in a hardware wallet (cold storage), keeping private keys offline to avoid online attacks. A hot wallet should only hold a small amount of funds for daily transactions. Second, keep private keys and recovery phrases strictly confidential; never take screenshots or store them in the cloud. It is recommended to make handwritten backups on fireproof and waterproof physical media, and to store them in different locations. Enable two-factor authentication (2FA), avoid using SMS verification, and prefer Google Authenticator or hardware security keys. Be cautious of phishing links; always verify the authenticity of websites before trading, and avoid clicking on unknown emails or social media messages. Regularly update wallet software and operating systems to patch security vulnerabilities. Diversify investments across different wallets and exchanges to reduce the risk of single points of failure. Finally, remain rational about high-yield projects, and be wary of smart contract vulnerabilities and scams. By combining technical protection with risk awareness, you can maximize the security of your digital assets.