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SIM

5 articles

How Google phone number verification works, and whether you should turn it off
  • Android

“Your number is verified”: why Google regularly checks SIM cards on Android

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

  • Stan Kaminsky

  • July 22, 2026

Airbnb security tips
  • travel

Airbnb security: tips for safe travel

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

  • Alanna Titterington

  • August 4, 2023

  • Carriers

SIM cards: attack of the clones

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 that was

  • Ilja Shatilin

  • January 19, 2016

  • cellular

The evolution of the SIM card

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

  • Ilja Shatilin

  • January 5, 2016

  • advice

Weak Link: How to lose everything having lost your SIM-card

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

  • Alex Savitsky

  • November 17, 2014

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