Malware
Viruses, Trojan Horses, and Spyware
Malware:
Any malicious software. There are three types of Malware, Viruses, Trojan Horses and Spyware.
Viruses:
They copy themselves and spread. The need contact to spread though. Contact as in through email, web sight links, etc.
Trojan Horses:
Just like in the stories, it seems friendly but just opens a door for people to access your personal info.
Spyware:
Spyware secretly takes all your personal information without you knowing.
How to avoid:
You can get an anti virus systems, a firewall, or just use your common sense.