STAMFORD, Conn. (WTNH) — Surveillance video helped Stamford police track down a man they say sexually assaulted a woman in an elevator recently. A self-defense expert says about 30-percent of his students turned to him for lessons after they were victimized.

Renshi Herbie Bagwell of Bagwell Academy in Milford says there are a few simple, easy tactics to keep in mind when you’re walking to or from your car, or an elevator in a parking garage or a building. He says one of the most important tools you should be armed with is a pen.

He News 8’s Erin Logan a brief lesson on how to protect yourself. To see that lesson, watch the video above.

Fore more about Bagwell Academy, click here.