"3 million assets gone!" The voice on the other end of the phone was trembling, "Account balance wiped clean, I never authorized anything!"

This isn't a contract liquidation, nor platform risk, it's outright asset theft. The feedback after reporting to the police was the same as not reporting at all—ultimately, I could only accept my bad luck.

Looking back afterward, I realized the problem had long been hidden in those unnoticed corners: a system not updated for three years, WiFi password unchanged for seven years, suspicious apps installed on the phone, mnemonic phrases casually recorded in a memo. No matter how sturdy the anti-theft door is, hanging the key outside is pointless.

In the crypto market, many people focus on bottom-fishing and chasing returns, but they neglect the most basic asset protection. I've seen too many such cases.

So I always want to emphasize one point: in this market, first learn to "lock your own door," then think about other things. Any temptation of hundredfold returns is less practical than safeguarding your assets.

These three points must be remembered:

**1. Mnemonic Phrase Management**: Only write it by hand on paper, and store it separately in two secure places. Avoid operations like sending via WeChat, screenshots, or clipboard copying—these are deadly vulnerabilities that expose your private key directly.

**2. Device Isolation**: If your assets are large, prepare a dedicated phone to manage your wallet. Don't install unnecessary software, don't click on unfamiliar links, and never use old phones that have been lying around for years—these have too many vulnerabilities to count.

**3. Regular Security Updates**: Change your home WiFi password regularly, and update your router firmware promptly. Many hackers break through from the weakest link—home networks.

A very practical point is that the security of crypto assets is not a multiple-choice question but a survival question. Only by protecting your coins can you truly enter this market. Don't wait until your funds are stolen to regret it.