[Simsec] SIMtester error message when trying to test eplus SIM Cards

Karsten Nohl nohl at srlabs.de
Thu Feb 6 21:36:07 CET 2014

Lieber Daniel,

On Feb 6, 2014, at 21:32 , Haaser <mail at haaser-it.com> wrote:

> How / in what way can one contact his / her mobile communications provider to remove those insecurities?
> Do you already have example cases of customers contacting mobile communication providers because of SIM card insecurities?

We are reporting vulnerabilities that we find to the operators (and vulnerability classes to the GSMA). Not aware of anybody else who tried disclosing SIM vulnerabilities yet.

Do you want us to forward your findings? We should have the right contact at each of the five German operators.



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