After losing 4000U in three seconds, I summarized this Web3 wallet theft prevention guide (suggest to bookmark).
Today I saw a fellow trader lose 4000U in three seconds; it was truly shocking.
Reflecting on these past few years, I've fallen into countless traps, been stolen from, and scammed hundreds of times, which led me to summarize this set of theft prevention rules. If one day you wake up and find your wallet emptied, I understand that feeling. So this article must be bookmarked; learning early is better than losing money.
✅ Device security section: Don't let your phone become a 'coin theft channel.'
1️⃣ The phone must be set with [fingerprint + lock screen password], and apps should also have a secondary fingerprint lock.
👉 Xiaomi users can use the [Xiaomi Dual Apps] system; only install trading software in the dual app, do not mix with daily use.
2️⃣ Use a dedicated device for crypto: trading phone not connected to the internet, do not install other apps, dedicated for trading, disconnect from the internet after trading.
3️⃣ Turn off all permissions to read clipboard, photo album, and files!
👉 Many viruses steal and change addresses through the clipboard; funds can disappear in an instant.
✅ Wallet security section: Don't authorize, don't link, don't rush.
4️⃣ Remember to separate wallets: [trading wallet] & [storage wallet]
👉 Immediately cancel authorization after trading, withdraw to the main wallet, and diversify risks.
5️⃣ Use Token Tool to check & cancel authorizations:
👉 Never grant 'unlimited limits', stop immediately upon seeing the red alert!
6️⃣ Airdrop links ≠ free candy; 90% are entry points for theft.
👉 Never click on unfamiliar links casually.
7️⃣ Store important assets using a multi-signature wallet + sub-wallet:
👉 Set up a 'sentinel wallet' to monitor large movements, and combine with an alarm app to be aware of anomalies in real-time.
✅ Operational habit section: Preventing is better than reacting.
Keep BNB/ETH wallet funds at zero; don't let hackers 'have access.'
👉 If not trading, don’t leave USDT/BNB in the address.
9️⃣ Don't store too many coins in one wallet; if there are many types, use sub-wallets.
👉 Even if one gets stolen, it won't lead to total loss.
🔟 Do not touch coins from projects you are unclear about, ones with unknown airdrops, or projects without a community!
✅ Practical reminders section: Summary from losses due to 'traps.'
Coins that exchanges plan to delist, definitely don’t touch; sell it and don’t buy it back.
👉 If you accidentally take over, delisting equals zero.
Some coins withdrawing from liquidity = destruction; test with small amounts first, don't blindly invest heavily.
👉 The stability of the coin pool is greater than everything!
The risks of opening contracts are even greater:
👉 Set stop-loss, maximum 70% position, control liquidation risk; coins can drop 99%.
✅ On-chain risk ranking (personal experience):
🥇 Solana chain has the highest security, difficult to steal coins.
🥈 ETH chain comes next.
🥉 BNB chain is the easiest to exploit, definitely clear it out!
Only after losing coins do you realize how important security is.
In Web3, wallet security does not have a platform safety net, and there is no 'lost and found'; once something happens, you rely on your own luck.
The experiences I've gained over the years, if you seriously read through and apply more than half, can help you avoid at least 90% of the pitfalls.
Please share, please bookmark, and feel free to leave comments or additions.
I don't want to see anyone lose 4000U in three seconds again.
