[Gsmmap] Silent SMS recorded. What now?

Ralph A. Schmid, dk5ras ralph at schmid.xxx
Mon Mar 2 16:17:23 CET 2015

I do not know the inner workings of SnoopSnitch, but control messages also
can come from a smart phone phoning home (BlackBerries are known for this)
and causing an answer of the network, and it is possible that the provider
configures the SIM remotely, what I have seen with O2 Germany quite often.
Maybe the app catches such communication? What is your home network, and (if
applicable) in what network have you been roaming? 




From: gsmmap-bounces at lists.srlabs.de [mailto:gsmmap-bounces at lists.srlabs.de]
On Behalf Of Quel Con
Sent: Monday, March 2, 2015 3:18 PM
To: gsmmap at lists.srlabs.de
Subject: [Gsmmap] Silent SMS recorded. What now?


Hello everyone,

I am a non-tech person with some user skills and have SnoopSnitch running
since a couple of months. While driving a car somewhere on a European
highway on Feb 27 in the evening, I received a warning for two silent
("binary") SMS that my cell phone received.

I would be very grateful if you could help me to better understand what is
happening here:

- Does SnoopSnitch block those SMS or just monitor them?
- Is there anything I should/can do now?
- What kind of information could someone receive from me by sending me such
silent SMS? 
- Does that compromise my phone's security?
- Is the info that SnoopSnitch collects (cell ID, SMSC, source no.)
valuable/helpful to anyone for analysis?

Thank you very much in advance for any help you can provide!


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