Yes, I'm a "geek" and I will be at Black Hat USA 2013 at Caesars Palace to hear this one. Frankly I'm actually excited to get my serious geek on. However, on a more serious note, the "other privacy implications" of where you could go with this potential exploit could be serious.

From stalkers, to thieves, Law Enforcement to the down right malicious technically savvy clients or providers.

{ Shoulder shrug }  

Merely an "out of the box" thinking  consideration to bat around, or not.

{Meanwhile back at the Lee lair.. evil doings are afoot experimenting what he does know about this hack - insert evil laughter here -}

 
Lee Dreams  
 
Edamus, bibamus, gaudeamus    

-- Modified on 7/22/2013 6:55:39 AM

GSM was already cracked few years ago, so it's not like they would bother with SIM much if they want to hack you, anyways

stronger encryption (Triple DES), don’t appear to be susceptible to these attack vectors,  Verizon and AT&T say they are not vulnerable to the vulnerabilities exposed by Nohl. In essence, mitigation of this attack comes down to the encryption standard used by your SIM card — so if you use a SIM that’s more than a few years old, you should probably get a new one.

It is limited in scope and I am sure phone providers will be stepping up their encryption in the modern world.

Hey, since my hobby phone is a disposable I got 3 years ago, should I get a new one?