A good firewall will filter out many of the threats facing your computer, however, some malware is always going to find its way onto your PC. For example, viruses, worms, Trojan horses and other forms of malware can find their way onto your computer by various means a firewall cannot detect, including downloading malicious email attachments and files from the internet. So to protect your PC you'll also need strong regularly updated anti-virus software. While a firewall protects your computer from the outside, an anti-virus program will work from the inside of your computer, hunting down hidden viruses and deleting them, while also scanning attachments and downloads before they can infect your computer.
Suggestions:
- For those of you that don't mind spending a few dollars on security,CA, offers one of the best products in the personal anti-virus market. They also offer a free 30-day trial for their anti-virus software, so you may want to give it a try even if you don't plan on ordering, just so that you can clean your computer out and start fresh.
- If you're looking for a highly regarded free anti-virus alternative, tryPC Tools Anti-Virus Free Edition.
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