{"action":"created","issue":{"url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/issues/69","labels_url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/issues/69/labels{/name}","comments_url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/issues/69/comments","events_url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/issues/69/events","html_url":"https://github.com/SecUpwN/Android-IMSI-Catcher-Detector/issues/69","id":34754284,"number":69,"title":"Detection of Silent (Stealth) SMS Type 0","user":{"login":"SecUpwN","id":6000299,"avatar_url":"https://avatars.githubusercontent.com/u/6000299?v=3","gravatar_id":"","url":"https://api.github.com/users/SecUpwN","html_url":"https://github.com/SecUpwN","followers_url":"https://api.github.com/users/SecUpwN/followers","following_url":"https://api.github.com/users/SecUpwN/following{/other_user}","gists_url":"https://api.github.com/users/SecUpwN/gists{/gist_id}","starred_url":"https://api.github.com/users/SecUpwN/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SecUpwN/subscriptions","organizations_url":"https://api.github.com/users/SecUpwN/orgs","repos_url":"https://api.github.com/users/SecUpwN/repos","events_url":"https://api.github.com/users/SecUpwN/events{/privacy}","received_events_url":"https://api.github.com/users/SecUpwN/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/labels/DETECTION","name":"DETECTION","color":"009800"},{"url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/labels/ENHANCEMENT","name":"ENHANCEMENT","color":"c7def8"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":132,"created_at":"2014-06-02T08:34:58Z","updated_at":"2015-03-10T21:40:10Z","closed_at":null,"body":"Law enforcement agencies are **very often** sending out so-called \"silent SMS\" ([see this German article](http://www.heise.de/newsticker/meldung/Zoll-BKA-und-Verfassungsschutz-verschickten-2010-ueber-440-000-stille-SMS-1394593.html)) which do not show up on a display of a target device, nor trigger any acoustical signal when received. But when they are delivered they generate a delivery receipt and, most importantly, are recorded in a data retention database together with the location of a mobile phone which received it. There's no need for an IMSI-Catcher then. Reliable detection of silent SMS will be crucial to the usefulness of AIMSICD.\r\n\r\n>A Silent SMS / Stealth SMS / Ping SMS is a **Type0 SMS** which is specified in GSM 03.40 as follows: \"A short message type 0 indicates that the ME must acknowledge receipt of the short message but may discard its contents.\"\r\n\r\nI have already contacted Michael (@c0rnholio), the developer of the awesome tool called [HushSMS](http://forum.xda-developers.com/showthread.php?t=1490484), which also enables its users to send out different types of SMS (including type Class 0, but without the location request). Check out his company [Silent Services](https://www.silentservices.de/). I have bought his App a long time ago and am hoping he'll register on GitHub to contribute some code snippets for detection of such SMS. Stay tuned."},"comment":{"url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/issues/comments/78154340","html_url":"https://github.com/SecUpwN/Android-IMSI-Catcher-Detector/issues/69#issuecomment-78154340","issue_url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/issues/69","id":78154340,"user":{"login":"E3V3A","id":194392,"avatar_url":"https://avatars.githubusercontent.com/u/194392?v=3","gravatar_id":"","url":"https://api.github.com/users/E3V3A","html_url":"https://github.com/E3V3A","followers_url":"https://api.github.com/users/E3V3A/followers","following_url":"https://api.github.com/users/E3V3A/following{/other_user}","gists_url":"https://api.github.com/users/E3V3A/gists{/gist_id}","starred_url":"https://api.github.com/users/E3V3A/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/E3V3A/subscriptions","organizations_url":"https://api.github.com/users/E3V3A/orgs","repos_url":"https://api.github.com/users/E3V3A/repos","events_url":"https://api.github.com/users/E3V3A/events{/privacy}","received_events_url":"https://api.github.com/users/E3V3A/received_events","type":"User","site_admin":false},"created_at":"2015-03-10T21:40:10Z","updated_at":"2015-03-10T21:40:10Z","body":"@AntiDiesel and @muleyryan  Please post your concerns on our XDA thread. I'm locking this issue until further notice. (This thread is getting too long and we've made some progress.)"}}