Computer Security is a branch of information security which refers to the protection against theft or corruption of computer-based information. The ever-growing use of computers and the Internet has left users vulnerable to viruses, trojan horses, spyware and identity theft; Computer Security lowers the risk of information compromise.

1. Use an anti-virus program
2. Keep operating system up to date
3. Don't open or download unfamiliar e-mail attachments
4. Never send confidential information over e-mail
5. Use a firewall CERT: Home Computer Security