300 million USDT evaporated overnight:
In the crypto world, the most dangerous thing is not the candlestick chart, but the "time bomb" in your phone.
This is not news; it is my brother's personal experience.
That day he called, his voice trembling as if he was lacking oxygen: "Bro, 300 million USDT is gone... I asked my wife to help me operate the wallet."
The incident was absurd enough to drive one to despair:
He was on a business trip and, to make things easier, he sent a screenshot of the mnemonic phrase via WeChat, asking his wife to log in and transfer funds.
His wife quickly replied: "Transfer completed."
When he got off the plane and opened the wallet, the balance showed 0.
After reporting to the police, it was even more heartbreaking—the police said: "Family operations fall under civil disputes."
His wife was so devastated she couldn't speak:
"I just pasted the mnemonic phrase; I didn't click transfer..."
The real culprit is not a person but the phone.
His wife had been using an old Android device, connected to the home WiFi that hadn't changed its password in three years, and the browser had an old "financial assistant" plugin installed from when she grabbed financial coupons.
The hacker relied on this plugin to listen to the clipboard—
Once the mnemonic phrase was pasted, it was automatically uploaded;
Once the wallet was logged in, the funds were instantly emptied;
So fast that not even a transfer record was generated.
Do you think this is a story?
Such tragedies happen every day.
Three life-saving rules, remember them:
1️⃣ Mnemonic phrase = Property deed + Safe + DNA
It must only be stored on a handwritten metal plate; absolutely no screenshots, no WeChat, no cloud backups.
70% of theft cases fail due to saved screenshots and social media transfers.
2️⃣ Wallet operations must use a "clean device"
Prepare a dedicated phone, install only the official wallet, do not connect to public WiFi, do not install any plugins.
The more it’s something like "free coin/market tools," the more it’s a breeding ground for viruses.
3️⃣ If family members don’t understand, don’t let them handle it
It's not about distrust; it's about professionalism.
In the blockchain world, there is no "undo operation" key.
Really want to help? Start a video call, verify the last four digits of the address by phone before operating.
And here’s a cool piece of trivia:
Hacker servers automatically clear logs after 72 hours.
When you discover the money is gone, the evidence has already turned to ashes.
In the crypto world, it’s not about who earns more but who survives longer.
Hackers never talk to you about the market; they focus on every moment of your negligence.
Your level of obsession with your assets is the security level of your wealth.
