When your phone rings and the caller ID is blocked, or it's an unknown caller, it can be pretty frustrating. Especially when you receive repeat unknown calls. If you're ready to stop those annoying ...

Caller ID is standard now, but it wasn't always. When widespread adoption started in the 1990s, it was controversial to the point that it was widely viewed as an invasion of privacy. For people with ...

Phone numbers stink for security and authentication. They stink because most of us have so much invested in these digits that they’ve become de facto identities. At the same time, when you lose ...

They vanished for a while, but “No Caller ID” calls are back, and not always for the better. These days, lots of people across the US are seeing more anonymous calls. Some are harmless, like delivery ...

Facebook has given people another reason not to trust it. The social network's two-factor authentication system, which uses phone numbers to improve account security, is also being used as a way to ...