Malware
Viruses, Trojan Horses, and Spyware
Viruses
Viruses are commonly spread through email, if you get an attachment in an email from someone you don't know do not open it. You should also use firewall and antivirus software on your computer.
Trojan Horses
Trojan horses are software that gives you what you downloaded but will also allow people access to your computer.
Spyware
Spyware can collect your personal information like your bank account. This is something you need to be careful of on public computers.