Yesterday, I accidentally made a "magical tool".

When inserted into a PC, this USB flash drive will surely bring down the system.

The probability of occurrence is 100%.

It is effective as an "offline cyber-attack" because all you have to do is plug it into a running PC and the system goes down a second or two later.

It simply brings down the computer, but it cannot do anything like ransomware. However, it is a great way to "harass" a boss or friend you don't like.

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Last night, I physically broke this USB flash drive completely with a hammer, pliers and nippers.