+A Trojan horse is a virus disguised as legitimate software.
Once you open or download the software, your documents are encrypted or scanned.
For example, you wanted to download a video game to your computer, but this game is too expensive and you don't have enough money or you can't pay. When I searched online, I found a copy of the game for free. After downloading the game software, the computer documents have been deleted.
And here I fell victim to the Trojan horse virus.