An intuitive on-demand scanning solution to help diagnose your system and keep malware and other nefarious actors from your machine. The need for antivirus solutions isn’t as big now as it was in Windows 7 and earlier days. Defender has gotten better, and with widespread ad-blocker usage to curtail the presence of malicious pop-ups and ads, most users should get by just fine if they’re even the slightest bit cautious.