How to protect your PC from scammers, criminals and hackers

Of the 600 million computers worldwide that have access to the internet, up to a quarter are infected by malicious Trojan virus programs, according to Vint Cerf, one of the founders of the internet.

Once infected, PCs can be used to send spam e-mails, launch denial of service attacks that bring down websites and to perpetrate fraud including the theft of financial information like credit card details.

Here's ten ways you can help protect your computer from becoming infected and compromised.

1. Make sure your version of Microsoft Windows is kept up to date

2. Use Mozilla Firefox as your web browser instead of Internet Explorer

3. Install and use a frequently updated anti-virus software programs

4. Install a firewall to further protect your computer

5. Protect Your Computer From Spyware, Adware and Malware

6. Don't download pirate movies, illegal music files or stuff from sites offering you cracks, codes or keys to unlock pirated software

7. If you must visit the dark side, check out the website via Scandoo first

8. Beware of false prophets bearing gifts

9. Be wary of pop-ups

10. Tell everyone who uses your computer to follow in your footsteps