Now in some countries where there are riots, the authorities are trying to somehow control the situation. In particular, many communication lines are blocked, including mobile communications and the Internet. True, it is not always suitable for curbing unrest (it is enough just to remember Egypt), but all this method is still used. Thus, in Iran, access to many network resources was again disabled, if not for the whole country, then for the largest cities.
In cities such as Tehran and Mashhad, the Internet has been disconnected for the second time in several days. Disconnecting globally, so without the Network, millions of people left this country. Not only http traffic is blocked, but https as well.
As usual, social networks were the first to be distributed, and Facebook and Twitter are among the blocked resources. In general, it was from these resources that famous events began in countries we know. We will not judge the consequences, a lot has already been said about this. But it is clear that it is the social networks that can serve as the focus of all sorts of opposition groups. And this tool in capable hands can be extremely effective.
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It is not yet clear whether disabling most of the known resources will help Iran. But the fact of the connection providers of the country have not yet confirmed. The fact that the Internet resources in this country are disabled, it became known from Iranian news agencies, which transmitted information to Western information agencies. Well, and those already spread information throughout the web.