You don't give out your phone number

Anyone who knows your phone number can easily attack you. Keep your number secret if possible. If you still want to be reachable, you can use messengers with a call function that do not require a number or where the number can be hidden.

More information

On sites such as cell-track.com or phone-location.info, for example, it is easy to find out whether a device is abroad or not, or whether a device is currently switched on. All you need is the phone number. There's nothing you can do about it except keep your number secret. State actors also have other options, such as infecting the device with a zero-click exploit (state trojan). Only an anonymous SIM card and keeping your number secret will effectively protect you from government attacks.

What is this task relevant for?

  • Political activism
  • Stalking and women's shelters
  • Behavior-based risks
  • Dangers in the mobile network
  • Rather simple