As of 2013, Iran has 46 million Internet users with a penetration rate of 61.57%.
and as of 2013 almost 50% of the top 500 visited websites worldwide were blocked, including You Tube, Facebook, Twitter, and Google Plus.
The blocked sites have a wide range of topics including health, science, sports, news, and shopping.
At the beginning of March 2012, Iran began implementing an internal Intranet.
This effort is partially in response to Western actions to exploit its Internet connectivity such as the Stuxnet cyberattack which have fueled suspicions of foreign technologies.