1. Microsoft’s Windows Defender
The Windows built-in antivirus software is far from being the complete computer security system on the market. Still, tech experts often argue that Windows Defender and common sense is everything you need to keep your computer safe.
The best part? It is completely free to use (assuming you are running a Windows operating system on your computer). It is frequently updated by Microsoft automatically through Windows Update, so you don’t have to worry about anything at all.
Unless you are willing to pay for an antivirus product to guarantee greater security, Windows Defender is one step ahead of its free competitors. Last year, Microsoft changed the name to Microsoft Defender when they announced that the service would be available for other operating systems.