6 Mar
2012
6 Mar
'12
9:06 p.m.
Hello,
i have a question about the functionality of the Osmoscon SimTrace
hardware system.
Can I log everything, also packets like silent SMS
(https://en.wikipedia.org/wiki/SMS#Silent_SMS)?
Thank you for your request.
Flo
6 Mar
6 Mar
9:50 p.m.
Hi Florian,
purely from my personal knowledge and experience (I'm not saying this is a
way it works in general), but phone may drop the SMS before it reaches the
SIM, if it's corrupted in a way or strictly addresses a phone rather than a
SIM card, so.. you may see some of them, you may miss some of them, this
really depends .. it's a case-by-case problem.
Cheers,
Lukas
2012/3/6 Florian Borggräfe <mailman(a)riseup.net>
Hello,
i have a question about the functionality of the Osmoscon SimTrace
hardware system.
Can I log everything, also packets like silent SMS
(https://en.wikipedia.org/wiki/SMS#Silent_SMS)?
Thank you for your request.
Flo
11:02 p.m.
On Tue, Mar 06, 2012 at 09:06:22PM +0100, Florian Borggräfe wrote:
i have a question about the functionality of the
Osmoscon SimTrace
hardware system.
Can I log everything, also packets like silent SMS
(https://en.wikipedia.org/wiki/SMS#Silent_SMS)?
I can only follow up to what Lukas wrote. We can trace anything that
ever hits the ME - SIM interface. But which phones might or might not
forward silent messages to the SIM remains an open question.
My personal educated guess would be that it is probably not sent to the
sim in the majority of the cases/phones. SMS on the SIM is an ancient
relic, and then in the case of silent SMS, if the phone knows it shall
discard it, why first push it to the SIM...
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
11:05 p.m.
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.
however i have no knowledge what authorities/hackers actually use as a
silent SMS.
2012/3/6 Harald Welte <laforge(a)gnumonks.org>
On Tue, Mar 06, 2012 at 09:06:22PM +0100, Florian
Borggräfe wrote:
i have a question about the functionality of the
Osmoscon SimTrace
hardware system.
Can I log everything, also packets like silent SMS
(https://en.wikipedia.org/wiki/SMS#Silent_SMS)?
I can only follow up to what Lukas wrote. We can trace anything that
ever hits the ME - SIM interface. But which phones might or might not
forward silent messages to the SIM remains an open question.
My personal educated guess would be that it is probably not sent to the
sim in the majority of the cases/phones. SMS on the SIM is an ancient
relic, and then in the case of silent SMS, if the phone knows it shall
discard it, why first push it to the SIM...
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org>
http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
4445
days inactive
4445
days old
3 comments
3 participants
participants (3)
-
Florian Borggräfe -
Harald Welte -
Lukas Kuzmiak