Hackers use SS7 (operators cooperation protocol) to intercept traffic, to detect subscriber’s location, to intercept SMS, to manage other Services. To do that they initiate particular requests, e.g. SendRoutingInfo or ProvideSubscriberInfo. To manage phone’s features hackers use SMS ‘type 0’ (so-called Silent or Stealth SMS), that cannot be find on the phone. All the requests go to an operator HLR. HLR is a part of our infrastructure; we record all the requests, block maleficent once and notify our subscriber about attacks.

You can check if your handset is secure from HLR attacks. Enter your mobile number in the field below. If you able to get your IMSI, unfortunately, there are no effective hard- and/or software programs installed on your phone.