Enable Antivirus Software for Windows & MacOS

This is just one step in a series created to help anyone improve their online security regardless of their technical knowledge. For more information, see our complete Simple Online Security series.

Whether using a Windows PC or a Mac, most people don’t need to buy antivirus software—as long as you download only from trusted sources and refrain from clicking on sketchy links, you can avoid many of the problems that third-party antivirus software purports to protect you from. But as a backup for anyone on a PC, the free tool included with Windows, called Windows Defender, is typically as reliable