What is Windows Defender and how do I use it to protect my computer?

Windows Defender is a built-in security program provided by Microsoft to safeguard your computer from various threats. It acts as an antivirus and anti-malware solution, offering real-time protection against viruses, spyware, and other malicious software. To use Windows Defender, simply ensure that it is enabled by going to the Windows Security app, which can be accessed by typing "Windows Security" in the search bar. From there, you can run quick, full, or custom scans to check for any potential threats. Windows Defender also provides automatic updates, ensuring that your system stays protected with the latest security definitions. Additionally, it includes features like firewall protection and browser integration to enhance your computer's security. It is essential to regularly update and use Windows Defender to maintain a secure computing environment.