The dark side of the internet

In the 'deep web', Freenet software allows users complete anonymity as they share viruses, criminal contacts and child pornography Fourteen years ago, a pasty Irish teenager with a flair for inventions arrived at Edinburgh University to study artificial intelligence and computer science. For his thesis project, Ian Clarke created "a Distributed, Decentralised Information Storage and Retrieval System", or, as a less precise person might put it, a revolutionary new way for people to use the internet without detection. By downloading Clarke's software, which he intended to distribute for free, anyone could chat online, or read or set up a website, or share files, with almost complete anonymity. "It seemed so obvious that that was what the net was supposed to be about – freedom to communicate," Clarke says now. "But [back then] in the late 90s that simply wasn't the case. The internet could be monitored more quickly, more comprehensively, more cheaply than more old-fashioned communications systems like the mail." His pioneering software was intended to change that. His tutors were not bowled over. "I would say the response was a bit lukewarm. They gave me a B. They thought the project was a bit wacky … they said, 'You didn't cite enough prior work.'" Undaunted, in 2000 Clarke publicly released his software, now more appealingly called Freenet. Nine years on, he has lost count of how many people are using it: "At least 2m copies have been downloaded from the website, primarily in Europe and the US.

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The dark side of the internet