one more thing that crossed my mind - it really depends on what you call a "silent sms", it may also be SMS sent to update some parameters of a SIM card (like (F)PLMN list), that is still a silent sms - most phones will not show anything about this being received .. and that will reach the SIM obviously.<div>
<br></div><div>however i have no knowledge what authorities/hackers actually use as a silent SMS.<br><br><div class="gmail_quote">2012/3/6 Harald Welte <span dir="ltr"><<a href="mailto:laforge@gnumonks.org">laforge@gnumonks.org</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On Tue, Mar 06, 2012 at 09:06:22PM +0100, Florian Borggräfe wrote:<br>
<br>
> i have a question about the functionality of the Osmoscon SimTrace<br>
> hardware system.<br>
> Can I log everything, also packets like silent SMS<br>
> (<a href="https://en.wikipedia.org/wiki/SMS#Silent_SMS" target="_blank">https://en.wikipedia.org/wiki/SMS#Silent_SMS</a>)?<br>
<br>
</div>I can only follow up to what Lukas wrote. We can trace anything that<br>
ever hits the ME - SIM interface. But which phones might or might not<br>
forward silent messages to the SIM remains an open question.<br>
<br>
My personal educated guess would be that it is probably not sent to the<br>
sim in the majority of the cases/phones. SMS on the SIM is an ancient<br>
relic, and then in the case of silent SMS, if the phone knows it shall<br>
discard it, why first push it to the SIM...<br>
<br>
Regards,<br>
Harald<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
- Harald Welte <<a href="mailto:laforge@gnumonks.org">laforge@gnumonks.org</a>> <a href="http://laforge.gnumonks.org/" target="_blank">http://laforge.gnumonks.org/</a><br>
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"Privacy in residential applications is a desirable marketing option."<br>
(ETSI EN 300 175-7 Ch. A6)<br>
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