February 26, 2008

libertus.net: Censorware Report on ISP "Voluntary" / Mandatory Filtering

Echo: Irene Graham - ISP "Voluntary" / Mandatory Filtering

[Description sent to a mailing list below]

Contains information about ISP-level filtering systems implemented, by various ISPs in various countries, to prevent *accidental* access to child sexual abuse material on web pages/sites. Page has sections about:

Europe (EU) Overview | Norway | Sweden | Denmark | Finland | Netherlands | Switzerland | Britain | Italy | Canada

The most notable thing about all of the Scandinavian and other European systems (except Britain and possibly Italy) is that they are using DNS blacklisting, which as some people on this list would already know, can only be used to block an *entire* domain/site, not a particular page, and is *trivially* easy to bypass. It's much less expensive to implement (than e.g. BT's hybrid URL-based system) which might well be why some of the ISPs in those countries were willing to voluntarily prevent *accidental* access to child sexual abuse material sites. However in, at least, the Netherlands and Switzerland there are a number of ISPs declining to voluntarily do so for a range of reasons.

By Seth Finkelstein | posted in censorware | on February 26, 2008 11:59 PM (Infothought permalink)
Seth Finkelstein's Infothought blog (Wikipedia, Google, censorware, and an inside view of net-politics) - Syndicate site (subscribe, RSS)

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