Those silent mobile calls

Last week, I wrote here about the fake Facebook friend requests that land in our notifications with regularity. This week it’s the turn of another petty irritation. This one arrives not through social media but through the good old-fashioned telephone call: the kind that rings once, we pick up and immediately it is gone.

At first, I wondered if these were some exotic new scam, like the so-called “one ring” tricks that tempt you into dialling back premium numbers. But actually, these are more mundane, if no less irritating. They come from robocallers and autodialers. Sometimes, dropped calls from busy call centres. The real culprit, though, is usually a machine pushing through numbers at industrial scale.

It is a familiar pattern. Our phone rings, we answer, a silence from the other end, and then click, gone. A dead line. That silence is a machine quietly registering our number as live so that we confirm ourselves as targets for the next wave of nuisance calls.

How did they get our numbers in the first place? I suspect through the endless breaches of telco and online government databases, or some website portal with leaky security. Our details get spilled into an underground marketplace of the Internet. Once a number escapes into that underground marketplace, it never escapes. It gets copied, repackaged and resold. Other times, the fault lies with “legitimate” data brokers, who scoop up information whenever we sign up for something trivial, in exchange for their free gifts. A common ploy nowadays which I counter with fictitious numbers and email addresses. Then there’s brute force autodialers that simply spin through every possible number in a given sequence until someone answers. 

And finally, spoofing. The number flashing on the mobile screen may look local or familiar, but it is fake. The sensible course of action is not to call back. Don’t feel obliged to answer unknown numbers. Block nuisance calls when we can, which I've begun to do lately. None of this will make the problem go away but at least it helps to know the game the scammers are playing.

If there’s any consolation, it’s that silence is still the best reply. Don't even say hello. After all, why waste words on a machine that doesn’t listen? At least with phones, unlike with people, we can block the number with a single tap and move on with our lives.