With silent SMS, cell site analysis and IMSI catchers, authorities can pinpoint the location of a mobile device to within a few metres.
Last year, the German Federal Criminal Police sent about 68,000 silent SMS in 33 cases (one of which was a danger aversion case), which is a significant increase compared to preceding years. The Federal Police sent around 48,000 silent text messages in 56 criminal proceedings, which is roughly the average of past years. This is stated in the answer to a parliamentary question by the Left Party in the Bundestag. „Germany: Mobile phones as a tracking bug“ weiterlesen
Inquiries in parliaments and under the Freedom of Information Act show the amount of secret text messages to find out the whereabouts of telephones and their owners. Police use the method in real time for arrests, while secret services create longer-term movement profiles with it.
„Silent SMS“ are text messages whose reception is not indicated by the mobile phone. However, they generate a communication process that is logged by the telephone providers. With a court order, security authorities query this data record. Police and secret services are interested in the radio cells in which the phones are located. In this way, they obtain the location and a movement profile of the persons concerned.
For some years now, biannual inquiries to the German government have documented that the figures for „silent SMS“ at the Federal Criminal Police Office (BKA) and the Federal Police are at a similar level. The highest value for both authorities together was in the first half of 2016 at around 138,000, the lowest in the first half of 2019 at around 26,000. Subsequently, the figures have more than doubled again, the Federal Ministry of the Interior announced last week. „Germany: Many „silent SMS“ at federal and state level“ weiterlesen
5G telephony makes communication more secure. Connections, subscriber and device identifiers are partly encrypted, also conventional IMSI catchers become useless. Providers could therefore be forced to install new surveillance technology.
With Multi-Access Edge Computing (MEC), the fifth mobile phone generation (5G) decomposes the transmission of telephone calls into individual stages and and encrypts them. Telecommunications providers no longer process the traffic centrally, but via various network edges. The metadata and content is only decrypted at these decentralized nodes.
That means that with 5G telephony, communication becomes much more secure. This poses a problem for police forces and secret services. „Surveillance of 5G: Governments plan to change laws“ weiterlesen