SIM

Who sends regular hidden requests from your smartphone and why, how phone number verification works, and whether you should turn it off.

Four threats you might face when using Airbnb, and tips for avoiding them.

In one of the previous installments of our GSM saga we mentioned an urban legend of hijacking encryption keys on the fly. It presupposes someone can clone your SIM card

Recently Samsung introduced the Gear S2 Classic 3G smart watch, which is the first device with eSIM support. Although it is a pilot, this technology is bound to spark a

In the first part of our story we covered the history of SIM cards. Now let us get down to their security. One of the first vulnerabilities in SIM cards

A SIM card, or Subscriber Identity Module is a familiar element of a mobile phone. It can be easily swapped or replaced, yet, it was not born at the same

This is how a seemingly simple SIM card in your smartphone can contribute to the loss of money and personal data.