Together with a few selected vendors, Avira is offering free Avira AntiVir 8 and Avira Premium Security Suite 8 license key for free with no strings attached, yes, no crack, keygen, or illegal serial number needed to run the premium version. For your information, do you happen to know that among all the antivirus software in the market, Avira AntiVir and Avira Premium Security Suite are both known to be the lightest in term of memory usage.