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[liberationtech] An Eventful Few Weeks in Iran: DNS Tampering, Content-Type Filtering and SSL Blocking on Google

Brendan Conway bconway at
Fri Oct 12 14:04:37 PDT 2012

On 10/12/12, Collin Anderson <collin at> wrote:
> Libtech,
> I was made aware that dumping data onto Twitter and Pastebin is not always
> the most useful way of providing public documentation, so I have collected
> some recent developments into a blogpost. I wanted to share it here because
> there are more than a few lessons for privacy tool providers, including
> that if your site or service does not authenticate itself properly to the
> user, you are demonstrably now much more exposed to having sessions
> hijacked. There are a number of people, including Amin Sabeti, that deserve
> all the credit for bringing these changes to light.
> Introduction.
> *As is the historical trend, an eventful month of political and economic
> instability, not the least reflected in the return of Mehdi Hashemi, the
> dive of the Toman, Ahmadinejad at the U.N. General Assembly, and the arrest
> of Ali Akbar Javanfekr, has led to an increase in the aggressiveness of
> Internet censorship by the state. This was most evident in the filtering of
> SSL access to Google and Gmail, however, what has received less attention
> are two development, the filtering of foreign-hosted media files and the
> fulltime implementation of DNS tampering. Since such moments are the time
> when the government tips its hand on what it can do, I offer some brief
> notes.*
> Cordially,
> Collin
> --
> *Collin David Anderson*
> | @cda | Washington, D.C.

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