Hackers control your computer through spyware, viruses, worms, and Trojan Horse programs. To protect your computer against these problems you must use anti-virus, anti-spyware and anti-malware software and keep these applications up-to-date. Always have a firewall that is set up correctly. Change passwords and administrative names consistently. Keep your wireless networks closed to the public and shut down your computer when you are not usin it.
Never open email spam or any emails you don’t recognize. Stay away from opening private sensitive accounts when you are using public networks. Don’t download free programs without full knowledge they are safe.