The Turkey Blocks internet censorship watchdog has identified and verified that restrictions on the Tor anonymity network and Tor Browser are now in effect throughout Turkey. Our study indicates that service providers have successfully complied with a government order to ban VPN services.

Tor is a free and open system designed to allow activists, journalists and ordinary internet users to circumvent government censorship of digital communications. As last line of defense against the world’s most severe internet censorship regimes, Tor has seen growing popularity in Turkey alongside commercial VPN services thanks to its free availability and resilience.

This article originally appeared in Turkey Blocks on Dec. 18.