What is the biggest fear when doing DeFi financial management? Once the wallet is attacked, assets accumulated over many years can instantly become zero. Many people have suffered significant losses due to insufficient attention to wallet security.

In fact, the logic of wallet security is not complicated—multiple layers of protection, proactive prevention, and regular self-checks. A complete security system can help you safeguard your investment gains.

**Level 1: Wallet Selection and Initialization**

This is the starting point of protection. First, use reputable wallets. Top wallets like MetaMask and Trust Wallet have been tested by the market. Niche wallets or unofficial versions carry high risks and may contain backdoors.

Don’t be lazy with password setting. Use uppercase and lowercase letters, numbers, and special symbols. The minimum length should be 12 characters. More importantly, do not use the same password across different platforms.

Backing up your seed phrase is the most critical step. This is essentially your wallet’s ID card—lose it, and you lose everything. Never store it in your phone album, cloud storage, or WeChat, as hackers specifically scan these places. The safest method is to write it down with pen and paper, lock it in a safe. After backing up, try restoring your wallet using the seed phrase to ensure there are no mistakes.

Another detail—turn off cloud sync during initialization to prevent the seed phrase from being secretly uploaded to the cloud.

**Level 2: Daily Operation Rules**

Simple and straightforward three no’s principle: no clicking on unfamiliar links, no scanning unknown QR codes, and no mentioning your seed phrase or private keys to anyone. These are bottom lines learned from painful lessons.