TheP4st (1164315) writes "A group of Swedish police officers thought it a good idea to use WhatsApp as a work tool for surveillance operations, the officer that set up their chat group mistyped one of the phone numbers to mistakenly include a civilian IT teacher. Once the teacher informed authorities about the mistake it took more than 24 hours before he stopped receiving sensitive case information that included criminal records excerpts, passport photos and communications between surveillance teams tailing suspects.
When confronted by Computer Sweden (article in Swedish) the officer responsible for setting up the group say "I know this server is not located in Sweden and that one cannot share every kind of information" Yet it took less than an hour from that the group were set up that the teacher started getting sensitive intel on suspects. The only mobile chat medium approved for sensitive information is Blackberry, and this initiative by a small group of officers happened as they do not have access to Blackberry handsets which are considered too expensive.
Article in English"