In the late night, a phone call broke the tranquility. On the other end of the line, a fren's voice was choked as he recounted a heartbreaking story: his Crypto Assets worth 2.8 million USDT vanished in an instant, all due to a simple operation by his wife.

The sequence of events is quite lamentable. This fren, due to a business trip, sent a screenshot of the wallet mnemonic phrase to his wife via WeChat to avoid delaying the transfer of funds, asking her to handle it on his behalf. However, when he received the message from his wife that the transfer was completed and opened the wallet, he found the balance had dropped to zero, and there wasn't even a trace of the transfer record.

Despite their immediate efforts to take various remedial measures, including reporting to the police and contacting the relevant platforms, these efforts ultimately proved futile. Even more heartbreaking is that the scene when the truth was revealed was more brutal than imagined:

It turns out that his wife was using an old Android phone, and the WiFi password had not been changed for many years. To make matters worse, there was a plugin in the phone's browser called "Financial Assistant," which seemed like a harmless tool but had actually been implanted with a listening script by hackers.

This script can steal the mnemonic phrase the moment the user copies it. Once the mnemonic phrase is pasted somewhere, 2.8 million USDT will be transferred in the blink of an eye, not even giving the victim a chance to confirm.

Tragedies of this kind unfold every day in various places, but we have yet to experience them ourselves. To avoid falling into similar predicaments, please keep the following key principles in mind:

First and foremost, the mnemonic phrase is not an ordinary password, but rather the "vault key" that directly relates to the security of your digital assets. Remember, do not take screenshots or photos, and definitely do not transmit it through instant messaging software. The correct approach is to use physical media such as metal plates for secure storage.

In the digital age, the forms of our wealth are increasingly diversified, but the awareness and methods to protect this wealth must also keep pace with the times. This lesson teaches us that when dealing with matters involving large amounts of crypto assets, one must remain highly vigilant and adopt strict security measures. Only in this way can we ensure the safety of our assets in this crypto world full of both opportunities and risks.