On 1st December 2021, some ISPs in #Russia started blocking access to the Tor network by means of IP blocking.
Out of (more than) 65 tested AS networks, OONI data only shows signs of Tor blocking on 15 AS networks in Russia.
#Russia also blocks obfs4 addresses, which means that Tor users in Russia may need to use private Tor bridges to circumvent the block: https://forum.torproject.net/t/tor-blocked-in-russia-how-to-circumvent-censorship/982
Tor blocking differs from ISP to ISP in Russia. However, not all users on the same AS network experience Tor blocking.
On some networks, a block page is served for http://torproject.org, enabling us to automatically confirm the block.
On other networks, OONI data suggests that access to https://www.torproject.org is being interfered with by means of a TLS man-in-the-middle attack.
In other cases, we observe that the connection is reset once the TLS handshake has been initiated, suggesting the use of DPI.
To help more Russians stay connected to the Tor network, please run a Tor bridge: https://forum.torproject.net/t/help-censored-users-run-a-tor-bridge/704 ❤️
To circumvent Tor blocking in #Russia, you can use a private Tor bridge: https://forum.torproject.net/t/tor-blocked-in-russia-how-to-circumvent-censorship/982
We also recommend keeping an eye out for (and updating to) the next Tor Browser version, and configuring Tor Browser to use Snowflake. ❄️
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