Short Answer

For most users - no extra antivirus is needed. Windows Defender is built-in and has become very strong. You have a good score comparison here, by AV-Test: AV-Test Windows Antivirus Comparison . On the AV-Test comparison, Windows Defender is on par with many paid antivirus solutions. It offers real-time protection, regular updates, and a range of features that are sufficient for the average user.

When You Might Need More

  • Enterprise environment
  • High-risk browsing habits
  • Advanced endpoint monitoring needs
As for enterprise, Windows Defender for Business offers enhanced features like centralized management and advanced threat protection, making it a solid choice for organizations as well. If you are already under the Microsoft umbrella, Defender integrates well with other Microsoft security tools, providing a cohesive security ecosystem.

What You Should Not Do

  • Install multiple antivirus programs - causes conflicts
  • Disable Defender entirely - reduces protection

What You Can Do

You can install Anti-Malware as this is not the same as antivirus. It is a good idea to have an anti-malware program in addition to Defender, as it can provide an extra layer of protection against specific types of threats that may not be fully covered by antivirus software alone. Some popular anti-malware programs include Malwarebytes, Spybot Search & Destroy, and Adware Removal Tool. These programs can help detect and remove malware that may have slipped past your antivirus defenses, providing an additional layer of security for your system.

Final Thoughts

Defender has outgrown its reputation as a basic antivirus. For most users, it provides robust protection without the need for additional software. Common sense beats expensive antivirus suites.