Recently, there have been frequent cases of asset theft in the market, but many people have not yet realized where the real danger lies.

A user's experience is quite typical. One day, they suddenly found their wallet balance was zero, with no authorization records. After reporting the incident, they realized—this is not a project risk or exchange issue, but a complete "digital robbery." Tracing back to the source, it was found that the problem had long been buried: a three-year-old unupdated phone system, a long-unused WiFi password, a bunch of suspicious financial management apps, and most critically—a mnemonic phrase that was screenshot and stored in a notes app.

**A key reminder: In the crypto world, no matter how secure your wallet defenses are, they are useless if the key is left on the doorknob.**

Here, the "key" is the mnemonic phrase. Many people habitually store it in WeChat, iCloud, or as a screenshot on their phone—equivalent to posting your house key on the community bulletin board. Once the mnemonic phrase contacts any connected device, security is compromised. Hackers don't need to crack complex wallet encryption algorithms; they only need to steal your mnemonic phrase, and assets can be transferred to any address instantly. There have been cases where users' millions of dollars in crypto assets were wiped out after their iCloud accounts were hacked.

**The only correct approach is: write it down on paper, store it separately in two secure physical locations. No digital storage, no photos, no sharing.**

When your crypto assets reach a certain scale, another line of defense becomes necessary—dedicate a clean device to operate your wallet. The rules for this device are simple: install no software other than the wallet, avoid clicking on unfamiliar links, and do not connect to public networks. Treat it as an independent financial fortress, isolating all potential risk sources.

There are no shortcuts to wallet security; only the accumulation of these details can protect your assets.