Avira antivirus is not updating
That's why we've dropped Defender from our list of free antivirus apps in this latest update of our free AV roundup. If you're not running advanced virus detection, zero-day virus protection, anti-malware, anti-ransomware and other security essentials, you're not doing it right and leave yourself open to infections and identity theft.
Users can download this database as a separate file and copy to the specified location on their computers.
Not that it's overtly bad – although it does tail behind just about every third-party antivirus solution – but because its widespread adoption has a big target painted on it for attackers.
Windows users who haven't installed something hardier are the perfect hosts for viruses; attack the weak links, attack through the chinks in the one piece of software armour these weak links have by default, and you're in.
There's a password manager, too, which is an undeniably good addition to your security portfolio.
It scores well on AV-TEST's widespread malware benchmark and continues a clean sweep against 0-day attacks – presumably that expanded detection network is really helping.
Review and where to download: Bitdefender Antivirus Free Edition Avast and AVG haven't yet fully merged, despite the former formally acquiring the latter in mid-2016.