A1: Windows Defender is a free anti-malware and antivirus software from Microsoft. It is designed to protect your computer from viruses, spyware, and other malicious software


Windows Defender is a built-in anti-malware and antivirus tool within the Windows Operating system that offers protection to users from malicious software and programs. It not only scans for known threats, but also constantly monitors the system for unrecognized or suspicious activities, on both local and networked systems. It is designed to be unobtrusive and efficient, so it runs quietly in the background.

The core functions of Windows Defender include scanning for malicious software, such as viruses, Trojans, worms, and other malicious items. It can detect and remove these malware infections, as well as any other malicious software. Additionally, Windows Defender provides real-time scanning for potential threats, by monitoring file operations, web searches, and downloads for any malicious activity. It also keeps an active lookout for potentially dangerous websites, and if it detects any activity that could be dangerous, the user is alerted and given the option to take action.

Additionally, Windows Defender can identify unwanted programs and applications, such as spyware, adware, browser hijackers, and potentially unwanted programs. It can also detect and clean up rootkits, which are used by hackers to hide their malicious activities on a computer system. Windows Defender also includes a feature called “Controlled Folder Access” which prevents malicious code from modifying files in certain folders.

Finally, Windows Defender includes additional security features, such as “Windows Firewall” and “Microsoft Security Essentials” which offer additional protection against online threats. It is important to note that Windows Defender should not be the only form of security used on the system, and should be combined with additional security measures, such as regular updates, patches, and strong passwords.