Re: [liberationtech] Receiving phone verification and 2-Step Verification codes through a 'number inside Iran'

2015-08-17 Thread Bernard Tyers
Geographical numbers (i.e. the number which an SMS is sent from) can be 
purchased by a telecoms company, e.g. an SMS gateway supplier, relatively 
easily.

It does not necessarily mean the message is sent from a company within Iran. 

Once the message is delivered to the Iranian telco, then thats a different 
matter.




 On 16 Jan 2015, at 17:44, Amin Sabeti aminsab...@gmail.com wrote:
 
 Google has sent its codes via SMS with Iranian number since 6 months ago.
 
 On 16 January 2015 at 17:39, Collin Anderson col...@averysmallbird.com 
 wrote:
 
 On Fri, Jan 16, 2015 at 12:10 PM, elham gheytanchi elhamu...@hotmail.com 
 wrote:
 I think it means the codes are generated by the state agencies.
 
 They are not, the international companies would contract with an SMS gateway 
 to send codes. That SMS gateway should be a more or less a dumb pipe that 
 transmits whatever it is sent by the provider. It so happens that now the 
 pipe is closer to the user but the source stays the same. The SMS gateway and 
 telecommunications companies can certainly surveil or modify the content (the 
 latter wouldn't be useful for 2FA), but it should not generate the codes.
 
 
 -- 
 Collin David Anderson
 averysmallbird.com | @cda | Washington, D.C.
 
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Re: [liberationtech] Receiving phone verification and 2-Step Verification codes through a 'number inside Iran'

2015-01-16 Thread Collin Anderson
On Fri, Jan 16, 2015 at 10:42 AM, Nariman Gharib nariman...@gmail.com
wrote:

 I want to know anybody here know is it a big deal or not and how we can
 solve this issue?


Their SMS partner probably now has a relationship with a local
telecommunications services company. I'm not sure it's anymore dangerous
than if the messages were from an international number since it's all
equally accessible to interception, which is not to say there isn't
concerns in that regards. I should hope those codes wouldn't be generated
by a service accessible by Iranian authorities.


-- 
*Collin David Anderson*
averysmallbird.com | @cda | Washington, D.C.
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Re: [liberationtech] Receiving phone verification and 2-Step Verification codes through a 'number inside Iran'

2015-01-16 Thread elham gheytanchi
I think it means the codes are generated by the state agencies.

From: col...@averysmallbird.com
Date: Fri, 16 Jan 2015 11:23:12 -0500
To: liberationtech@lists.stanford.edu
Subject: Re: [liberationtech] Receiving phone verification and 2-Step 
Verification codes through a 'number inside Iran'


On Fri, Jan 16, 2015 at 10:42 AM, Nariman Gharib nariman...@gmail.com wrote:
I want to know anybody here know is it a big deal or not and how we can solve 
this issue?
Their SMS partner probably now has a relationship with a local 
telecommunications services company. I'm not sure it's anymore dangerous than 
if the messages were from an international number since it's all equally 
accessible to interception, which is not to say there isn't concerns in that 
regards. I should hope those codes wouldn't be generated by a service 
accessible by Iranian authorities. 

-- 
Collin David Andersonaverysmallbird.com | @cda | Washington, D.C.


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Re: [liberationtech] Receiving phone verification and 2-Step Verification codes through a 'number inside Iran'

2015-01-16 Thread Collin Anderson
On Fri, Jan 16, 2015 at 12:10 PM, elham gheytanchi elhamu...@hotmail.com
wrote:

 I think it means the codes are generated by the state agencies.


They are not, the international companies would contract with an SMS
gateway to send codes. That SMS gateway should be a more or less a dumb
pipe that transmits whatever it is sent by the provider. It so happens that
now the pipe is closer to the user but the source stays the same. The SMS
gateway and telecommunications companies can certainly surveil or modify
the content (the latter wouldn't be useful for 2FA), but it should not
generate the codes.


-- 
*Collin David Anderson*
averysmallbird.com | @cda | Washington, D.C.
-- 
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Re: [liberationtech] Receiving phone verification and 2-Step Verification codes through a 'number inside Iran'

2015-01-16 Thread Amin Sabeti
Google has sent its codes via SMS with Iranian number since 6 months ago.

On 16 January 2015 at 17:39, Collin Anderson col...@averysmallbird.com
wrote:


 On Fri, Jan 16, 2015 at 12:10 PM, elham gheytanchi elhamu...@hotmail.com
 wrote:

 I think it means the codes are generated by the state agencies.


 They are not, the international companies would contract with an SMS
 gateway to send codes. That SMS gateway should be a more or less a dumb
 pipe that transmits whatever it is sent by the provider. It so happens that
 now the pipe is closer to the user but the source stays the same. The SMS
 gateway and telecommunications companies can certainly surveil or modify
 the content (the latter wouldn't be useful for 2FA), but it should not
 generate the codes.


 --
 *Collin David Anderson*
 averysmallbird.com | @cda | Washington, D.C.

 --
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Re: [liberationtech] Receiving phone verification and 2-Step Verification codes through a 'number inside Iran'

2015-01-16 Thread S.Aliakbar Mousavi
I think regardless of its sender, since the authority can read the SMS it
would be better to ask users inside the country to use the app rather than
a mobile phone number.

On 16 January 2015 at 12:44, Amin Sabeti aminsab...@gmail.com wrote:

 Google has sent its codes via SMS with Iranian number since 6 months ago.

 On 16 January 2015 at 17:39, Collin Anderson col...@averysmallbird.com
 wrote:


 On Fri, Jan 16, 2015 at 12:10 PM, elham gheytanchi elhamu...@hotmail.com
  wrote:

 I think it means the codes are generated by the state agencies.


 They are not, the international companies would contract with an SMS
 gateway to send codes. That SMS gateway should be a more or less a dumb
 pipe that transmits whatever it is sent by the provider. It so happens that
 now the pipe is closer to the user but the source stays the same. The SMS
 gateway and telecommunications companies can certainly surveil or modify
 the content (the latter wouldn't be useful for 2FA), but it should not
 generate the codes.


 --
 *Collin David Anderson*
 averysmallbird.com | @cda | Washington, D.C.

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-- 
S.Aliakbar Mousavi
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Re: [liberationtech] Receiving phone verification and 2-Step Verification codes through a 'number inside Iran'

2015-01-16 Thread Collin Anderson
I think that's reasonable, not only due to the potential for interception
or blocking of the messages, but also because these usually have a shorter
lifespan, which should provide some added protection against the phishing
of 2FA codes.

On Fri, Jan 16, 2015 at 12:54 PM, S.Aliakbar Mousavi mousavi.s...@gmail.com
 wrote:

 I think regardless of its sender, since the authority can read the SMS it
 would be better to ask users inside the country to use the app rather than
 a mobile phone number.

 On 16 January 2015 at 12:44, Amin Sabeti aminsab...@gmail.com wrote:

 Google has sent its codes via SMS with Iranian number since 6 months ago.

 On 16 January 2015 at 17:39, Collin Anderson col...@averysmallbird.com
 wrote:


 On Fri, Jan 16, 2015 at 12:10 PM, elham gheytanchi 
 elhamu...@hotmail.com wrote:

 I think it means the codes are generated by the state agencies.


 They are not, the international companies would contract with an SMS
 gateway to send codes. That SMS gateway should be a more or less a dumb
 pipe that transmits whatever it is sent by the provider. It so happens that
 now the pipe is closer to the user but the source stays the same. The SMS
 gateway and telecommunications companies can certainly surveil or modify
 the content (the latter wouldn't be useful for 2FA), but it should not
 generate the codes.


 --
 *Collin David Anderson*
 averysmallbird.com | @cda | Washington, D.C.

 --
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 S.Aliakbar Mousavi



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-- 
*Collin David Anderson*
averysmallbird.com | @cda | Washington, D.C.
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