For most home Windows 11 use, the included protection is sufficient.
Windows Security is built into Windows and includes Microsoft Defender Antivirus, which provides real-time protection against viruses, malware, and other threats. It is integrated with features such as SmartScreen and the firewall, and it is designed to protect the device from the moment it starts.
A separate antivirus like Norton is usually not necessary just to improve basic malware protection. Running multiple anti-malware apps at the same time can slow the system down or make it unstable. If another antivirus is installed and turned on, Microsoft Defender Antivirus turns off automatically.
Useful built-in protection and practices include:
- Keep Microsoft Defender and Windows updated.
- Leave SmartScreen enabled in Microsoft Edge.
- Avoid opening unexpected email attachments or links.
- Run a quick scan in Windows Security: Virus & threat protection > Quick scan.
- For a specific file or folder, right-click it in File Explorer and select Scan with Microsoft Defender.
Third-party products can add extra features, but they are not required for typical home protection.
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