#美国贸易赤字状况 3 million US dollars in one second

"Right in front of your eyes, the balance drops to zero. I didn't do anything."

The person on the other end of the call sounded hoarse. It's not a liquidation, not a scam—it's theft. What about reporting to the police? The police said it might have been a family member's mistaken operation.

He later discovered the vulnerabilities in daily life: a system that hadn't been upgraded in three years, a WiFi password unchanged for seven years, screenshots of seed phrases in his phone notes... The most outrageous thing was that his keys were hanging right on the door handle.

In the blockchain world, this is a common story. I've analyzed hackers and often repeat one phrase: the most important thing to learn isn't how to buy the dip, but how to close the door.

Many people focus on a hundredfold gains but keep their assets behind paper-thin walls. Here are a few things more deadly than K-line charts:

**Seed phrases only live on paper**

Don't store them in WeChat, don't screenshot, don't copy to clipboard—it's no different than sticking the key on the door. Write them down with a pen, hide them in two separate places. No internet-connected device should ever touch them.

**Use a dedicated device to guard your money**

If your assets are large enough to keep you awake at night, get a clean phone. Only install the wallet, no unnecessary apps, avoid clicking on unfamiliar links, stay away from public WiFi. Old system vulnerabilities are everywhere; don't let it guard your wealth.

**Change your network locks regularly**

When was the last time you changed your home WiFi password? Hackers like to sneak in through the back door of your home network. Your router firmware should also be patched.

We always talk about stepping on the gas, but often forget to hit the brakes. In the crypto world, security isn't an extra point—it's the passing grade. No matter how much effort you put into your positions and tracks, one careless operation can wipe everything out. Choosing a reliable trading tool is also crucial—security architecture, risk control systems, two-factor authentication—these invisible but life-saving measures are often overlooked.

Final words: defense is always easier to profit from than offense.