1. How can you tell if you have caught a Trojan in your computer (cell phone, laptop, PC, etc.)?
2. How can this be removed?
3. Can I remove Trojans when I reset my computer to factory settings?
To 3 .: If you format the hard drive, it should be gone. Otherwise there's still the option to overwrite the hard disk with 0s.
You notice that you have a trojan pretty quickly, all your data is encrypted and they ask you to pay a ransom. There are certainly other types that I'm not aware of, I'm not so blatantly into the subject of PC's, but rather with cell phones.
In which the device does not run as it should. So it gets slower, the battery drains faster, pop-up ads.
The easiest and most effective way to do this is to reset the device to the factory settings. (In the case of computers, it is best to set up the operating system from scratch - per iso.)
Yes.