The key to cleaning up the internet is tackling the darknets, not letting censorship in by the back door

The latest proposals to lock down the UK internet in the name of preventing child pornography are at best a misunderstanding of how the dark side of the internet works, and at worst a basis for a censorship infrastructure that could make the Great Firewall of China look like a leaky sieve.

In an interview with the BBC, prime minister David Cameron proposed that search engines should block certain terms, warning users of the consequences of searching for those terms.

While that's all very well, it's an approach that's not going to stop the real trade in illegal images — which never touches the big search engines, and hides behind encryption and custom-built networks that Peter Biddle and three other Microsoft engineers christened "darknets" in their 2002 paper. That flaw makes the proposals both misguided and dangerous, as the Open Rights Group notes in its considered response.

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