The Rise of Robocalls and Cell Scams—and How to Stop Them

"Jen King was in a hurry to get out the door of her Bay Area home on a recent morning, and she missed a call to her cell phone because of it. The phone number that called her, she later discovered, was startling.

“It was my home phone calling me, which was not possible,” says King, who recently finished a doctorate in information science and now works at Stanford University.

In King’s case, the missed call from her home number sparked quite a bit of curiosity, in part because of her current role at Stanford. She’s the director of consumer privacy at the Center for Internet and Society at Stanford Law School.

“The fact that somebody knows those two phone numbers belong to the same person…” King says. “What does that imply?”"