Microsoft Defender Antivirus

Formerly known as Windows Defender, Microsoft Defender is a built-in antivirus solution for Windows operating systems. It offers real-time protection against malware, spyware, and other threats. Microsoft Defender includes features like parental controls, cloud-based protection, and device performance monitoring. While it lacks some of the advanced features of third-party antivirus programs, it is lightweight, seamlessly integrated with Windows, and free for users of the OS.