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The Wagner group was thrust into the spotlight last year when three Russian journalists were killed in Central African Republic while investigating its alleged presence there.

Committee to Protect Journalists says 28 journalists have been killed in Russia since 2000

The cyber-repression was made easier by the physical structure of Tunisia’s data flow, which runs through just a few choke points. In broad terms, the system has two distinct parts: one for intercepting phone-related traffic and one for the Internet, Saadaoui says.

In each of the three telecom rooms, which are about half the size of a tennis court, a handful of computers known as “boxes” straddle the data pipelines, Chakchouk says. Their function is to siphon off communications, mostly by searching for key words, according to Saadaoui. “You get all the traffic going through these boxes,” Saadaoui says. Once the system flagged a suspect e-mail, a fiber optic network under the streets of Tunis carried it from the telecom offices to the Interior Ministry’s operator room, Saadaoui says. Moez Ben Mahmoud Hassen, a spokesman for Tunisie Telecom, said the company “denies any possible relation with such practices.” He stressed that it follows the law and respects the confidentiality of communications. Asked about the company’s activities during Ben Ali’s government, he said it was a matter for the courts and declined to elaborate. Communications through mobile operator Orascom Telecom Tunisie, also known as Tunisiana, were not monitored, according to a statement released by company spokeswoman Fatma Ben Hadj Ali. The country’s other mobile operator, Orange Tunisia, didn’t respond to requests for comment.

By 2010, it became a contest as Tunisians increasingly employed encryption the packet inspection couldn’t crack. Communications on Facebook boomed, and the regime demanded better tools, Saadaoui says. The same European contractor that provided e-mail surveillance signed a deal to add monitoring of social networks, he says. It was too late. The supplier hadn’t yet delivered the solution when the “Facebook revolution” crested in January. The government’s last-ditch attempts to quell online organizing included hacking and password-stealing attacks by Ben Ali’s regime, outside the purview of the Internet agency, Saadaoui says. Slim Amamou, a blogger who was arrested during the uprising and briefly became a minister for youth and sport after the revolution, says the presidential palace and ruling party orchestrated the final cyber attacks.

Today, Chakchouk, the new head of Tunisia’s Internet authority says he’s working to dismantle Ammar 404, and turned off the mass filtering, he says. Now he’s locked in legal battles over court orders to block specific Web pages. On Saturday, May 7, he and his team pulled an all-nighter to set the filtering equipment to block a single Web page to comply with a military court’s demand related to a defamation complaint. The following Tuesday, still looking tired, Chakchouk says it took so long because they were figuring out how to replace the page with a message explaining the blockage -- rather than the customary Error 404. Since the revolution, Chakchouk has spoken at conferences around the world, decrying censorship. Yet he won’t say much about surveillance. For now, the packet inspection boxes are still on the network. “We tried to understand the equipment and we’re still doing that,” he says. “We’re waiting for the new government to decide what to do with it.”