Today you do not always have to pay for a good security software for your PC, some incredible programs come absolutely free! Here we list the best security software available on the market. This includes a few trials (which are useful if you just wish to clean your PC up a bit), as well as fully functional downloads. Here you will find anti spyware programs, anti virus programs, firewalls, data encrypters and more! Check out the following links...

NEW! Windows Defender - a free spyware-removal tool from Microsoft.
Ad - Aware - freeware from Lavasoft - powerful scan and removal from Lavasoft
Seek & Destroy - great scanning and removing freeware from Spyboot. Removes spyware, trojans and some viruses.
Bazooka - freeware, fastest ever scan and removal from Kephyr
eTrust Pest Partol - free 30 days trial of an anti spyware program
Webroot - free 14 days trial, during which you are protected and can clean spyware
Zone Alarm firewall - Leading free firewall for cables DSL connection
Cryptainer LE - This free software encrypts and password-protects any type of data
Jetico firewall -freeware firewall for personal use
AVG anti virus - free powerful anti virus protection from Grisoft
Avast anti virus - free anti virus software for home users from Avil
Spyware Blaster - Protect your PC from spyware been installed from Javacool Software
A-squared - Protect yourself against trojans, worms, dialers, spyware and hajckers
EMCO Malware Destroyer - Scan and remove malware from your computer
BitDefender 8 - Anti Virus software with fully functional scan and quarantine option
Spam Off - Protect your email box instantly from spam and junk emails
Anti-EULA EULAlyzer - Checks an "end user license agreement" (EULA) before you install software to check for amazing provisions like it's ok to spy on you or to swamp you with ads.
Microsoft® Windows AntiSpyware (Beta) - Windows AntiSpyware is a security technology that helps protect Windows users from spyware and other potentially unwanted software.

Important Firewall Installation info:

Before installing personal firewall software on a computer that runs Windows XP, be sure that the firewall built into Windows XP is turned off. Using two software firewalls at the same time only causes system instability, but doesn't necessarily protects you better as it can lead to software crash. Completely uninstall one before installing another. Use the vendor's uninstall utility or if not available, use the "add / remove software" tool, located in the Control Panel. After you install a firewall, be sure to check it with a service like the Security Space Desktop Audit to make sure that it is configured correctly. Testing your firewall is the only sure way to tell that your computer is really being protected.

When choosing security software:

When you decide to protect yourself against all the threats and malicious software and attacks, it's important to choose a good and reliable software that will do it for you, and won't harm your computer instead. How to define a reliable program? First of all, companies that has been a long time on a market and received a positive feedback and recognition from download.com or c|net are likely to be trustworthy. Ask your friends, what they used and been satisfied with, they will not advertise, but be honest about their experience with software. However, what worked good for your friend, might not work good for you... why? Everything depends on the combination of hardware and software you are using. The amount of RAM ("inner memory"), programs that load of startup, firewall's configurations, etc. The bottom line is, you never know unless you test it yourself, but been guided by other's experience and reviews, can prevent you from downloading scam-programs.