I just found a site, where they are providing BitDefender antivirus full version for 6 months. I just downloaded its working fine with me, it will redirect you to Bitdefender official website only, so I don't think there is an issue with any kind of viruses or something. You don't need to enter any of your credit card or others details to avail this offer. I am not affiliated with this website or BitDefender: just to make sure everyone knows this is available for free. https://sharewareonsale.com/s/bitdefender-internet-security-sale if this is not the right section to post this please remove it as it is my first post, not so sure. Thanks.