‘Small and medium businesses are in front of threats day in and day out. The Trojan horse is the employee inside that business that just doesn’t know what’s going on,’ says Webroot’s Braden Sawyer.

When the IBM PC was new, I served as the president of the San Francisco PC User Group for three years. That’s how I met PCMag’s editorial team, who brought me on board in 1986. In the years since that ...