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Latest VDF status Your Avira software regularly updates itself with the latest Virus Definition File (VDF). Check here to see if you have the most recent version.

Anti virus for Linux, Windows and more with firewall, antispam, recovery security - Avira AntiVir

http://www.avira.com/
http://www.kaspersky.com/ At every layer of your enterprise, Kaspersky puts you in control by delivering superior, intelligent protection against emerging and increasingly sophisticated threats, backed by relentless anti-malware expertise.

Kaspersky Lab: Antivirus software