"Just clicked once…" A single sentence, and 3 million USDT vanished into thin air. That night, my friend's voice was full of tears.

The silence at 3 a.m. was more painful than a liquidation. "Is the screenshot of the mnemonic still in the WeChat group?" That was the only question I could think of. The response was dead silence.

【Hilarious but Bloody Truth】
Before going on a business trip, in a rush, he screenshot the 12 mnemonic words and threw them into the family group chat, even recording a foolish "Copy → Next Step" tutorial. His wife followed the steps, and in 30 seconds, the on-chain assets were lightning-quick transferred away. Account balance: zero.

The police report was very official: "Family members operated voluntarily, no case to be filed." In other words—goodbye, 3 million.

【The real culprit is never "clumsy hands"】
Don’t rush to blame the family. The root of the problem lies in himself:

An Android phone that hasn't been refreshed in three years is still running, with Wi-Fi passwords like the neighborhood name. The browser is full of various "zero-cost candy" plugins. The original images in WeChat are automatically synced to iCloud. Hackers don’t even need much effort; they can transfer assets cleanly in one go. Server logs are automatically cleared every 72 hours, leaving not a single clue.

【Three survival rules bought with 3 million】
**First, the mnemonic is your life.** Don’t screenshot, don’t upload to the cloud. Write it by hand on a metal plate, stored separately in multiple fireproof cabinets. On-chain, once a transfer is made, there’s no regret button.

**Second, the device used must be a fortress.** Use an old phone dedicated solely to the official wallet app. Disconnect from the internet before each operation, and clear the clipboard immediately after. This isn’t pretentious; it’s basic law.

**Third, family members operating on your behalf must be double-verified.** If you must have family transfer funds, they must be monitored via video call throughout. Compare the last four digits of the address word by word, pause three seconds before confirming. One second of hesitation, and millions could evaporate.

Now he spends every night polishing that titanium steel plate. He says it’s a "peace of mind charm" bought with 3 million. Asset security isn’t about a single trick; every detail must be tight. The market still has a chance to turn around, but on-chain transfers? Those are truly irreversible.

Protecting the principal is far more valuable than predicting a rise or fall.