{"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 [$15]","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/BOUNTY","name":"BOUNTY","color":"129e5e"},{"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":161,"created_at":"2014-06-02T08:34:58Z","updated_at":"2015-07-07T14:23:27Z","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 (@SilentServices), the developer of the useful 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 contribute some code snippets for detection of such SMS. Stay tuned.\r\n\r\n<bountysource-plugin>\r\n---\r\nThere is a **[$15 open bounty](https://www.bountysource.com/issues/2457232-detection-of-silent-stealth-sms-type-0-15?utm_campaign=plugin&utm_content=tracker%2F565750&utm_medium=issues&utm_source=github)** on this issue. Add to the bounty at [Bountysource](https://www.bountysource.com/?utm_campaign=plugin&utm_content=tracker%2F565750&utm_medium=issues&utm_source=github).\r\n</bountysource-plugin>"},"comment":{"url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/issues/comments/119220106","html_url":"https://github.com/SecUpwN/Android-IMSI-Catcher-Detector/issues/69#issuecomment-119220106","issue_url":"https://api.github.com/repos/SecUpwN/Android-IMSI-Catcher-Detector/issues/69","id":119220106,"user":{"login":"banjaxbanjo","id":7005094,"avatar_url":"https://avatars.githubusercontent.com/u/7005094?v=3","gravatar_id":"","url":"https://api.github.com/users/banjaxbanjo","html_url":"https://github.com/banjaxbanjo","followers_url":"https://api.github.com/users/banjaxbanjo/followers","following_url":"https://api.github.com/users/banjaxbanjo/following{/other_user}","gists_url":"https://api.github.com/users/banjaxbanjo/gists{/gist_id}","starred_url":"https://api.github.com/users/banjaxbanjo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/banjaxbanjo/subscriptions","organizations_url":"https://api.github.com/users/banjaxbanjo/orgs","repos_url":"https://api.github.com/users/banjaxbanjo/repos","events_url":"https://api.github.com/users/banjaxbanjo/events{/privacy}","received_events_url":"https://api.github.com/users/banjaxbanjo/received_events","type":"User","site_admin":false},"created_at":"2015-07-07T14:23:27Z","updated_at":"2015-07-07T14:23:27Z","body":"@E3V3A That's new I always thought all this low level baseband radio data would come from the logcat radio. I guess thats the problem can you email an edited version of your logcat EVA and send a wap wmi and a type 0 sms. (remove personal data) just need to lines from start of incomming sms to the end of the last bit of useful sms data.\r\n\r\n>We could consider putting a filtered logcat in a specific ramdisk with much less spam in it. \r\n\r\nI really don't want to use a filter because the more baseband/phones add the bigger and more complicated the filter will become plus we will probably miss important data like the senders number etc.. What you think?\r\n\r\n>a) Is there any timeout or time limit here?\r\n\r\nThere isn't really a time limit soon as the string is seen in log it alerts user."}}