Avast! Internet Security provides complete antivirus, anti-spyware, AntiSpam, and firewall protection, complemented now by new avast! SafeZone™ technology. It creates an isolated virtual desktop, invisible to any possible Attacker, where you can do your online shopping and banking securely. Once installed, avast! runs silently in the background to protect your computer against all known forms of malware. You don’t need to do anything else – just install and forget!
Key Features of Avast! Internet Security 6 :

Shop and bank online with total privacy
avast! SafeZone™ opens a new (clean) desktop so that …

If you want the best free antivirus you can use avast antivirus, where the Avast latest version adds new features.
To activate the avast antivirus license key you can use W6754380R9978A0910-4TZ59467 and can use this license is valid until 2038
Avast does not block the licenses. License may only be used in AV Avast free course and use Avast free for non-commercial purposes. And there is no guarantee of the following license key will be blocked in the future.
Source:
http://tricks-collections.com/avast-license-key-activate-avast-free-antivirus-until-2038/
Update:
New Official Avast Program Update 6.0.1289
Free AV: http://files.avast.com/iavs5x/setup_av_free.exe
Pro AV: http://files.avast.com/iavs5x/setup_av_pro.exe
IS: http://files.avast.com/iavs5x/setup_ais.exe
source: rel=”nofollow” http://forum.avast.com/index.php?topic=84297.0

Although many say that Windows 7 is the most secure Windows version yet we can not turn a blind eye on the cunning bad guys in utilizing every opportunity to do evil.
We will need an additional program that will further strengthen the security of Windows 7. And the following 10 antivirus programs can we use to protect Windows systems 7:
1. AVG
AVG has just released version 9.0 product line consisting of: AVG Antivirus Free Edition customers and annual visits, AVG Antivirus, AVG Internet Security, and AVG Internet Security Business Edition (which …

To update Avast Antivirus, we can use 2 methods or means of Online and Offline.
For the online, after Avast! installed on the computer, usually he has default settings that have been arranged so that each time your computer is connected to the internet, he will renew the database automatically identifies the virus.
But if not, you can arrange it easily. Way, first, of course, open the program Avast! His (usually located in the START »All Programs» avast! Antivirus). For a moment, Avast! will conduct exploration on the memory system to check …