Using old GSM encodings to know if a user is Online on the GSM Network Posted by evilsocket on Monday July 27, 2015 @03:56PM from the evilsocket.net dept. http://www.evilsocket.net/2015/07/27/how-to-use-old-gsm-protocolsencodings-know-if-a-user-is-online-on-the-gsm-network-aka-pingsms-2-0/#.VbaM3HCN7j4.hackernews ( no comments | 4 points | on HN )
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