On Sunday 25 Aug 2013 14:05:21 Dennis New wrote: > On Sat, 24 Aug 2013 11:18:52 -0400, Steve Dougherty wrote: > > On 08/24/2013 01:42 AM, Kevin Franks wrote: > > > Hi. I read the FAQ question that says "I don't want my node to be > > > used to harbor child porn, offensive content or terrorism. What can > > > I do?" > > > > > > My question is, if I use freenet, how can I tell if my computer has > > > such content installed on my computer, and how to get rid of it when > > > I stop using Freenet? Thanks. > > > > To answer your immediate question, you cannot - practically speaking - > > tell what content is stored on your computer specifically. Doing so > > requires a concerted effort and the use of tools that could - but to > > my knowledge do not - exist. Even then, you would be unable to > > identify everything. You can remove the content Freenet has stored on > > your computer by uninstalling Freenet. > > Hasn't someone created some kind of chunk/CHK filter already? (For > filtering local content?) And assuming someone else bothers to maintain > a database of undesirable stuff, that would suffice. Of course, it > would also severely compromise the anonymity of the undesirables (the > people), which defeats the purpose of Freenet. Which is to say, it's not > that it's technically impossible to do this, it's that we believe in > free speech. > > Anyone is free to fork Freenet to only allow desirable content. Good > luck.
There are lots of problems with a blacklist: Unless they were a government agency it would be legally very difficult to maintain a blacklist, since they'd need to download the full metadata in order to block all the blocks, and probably they'd need to download the full data to check whether it is what it is claimed to be (which makes them vulnerable to prosecution for posession, not to mention various other obvious issues). Of course you could block stuff by downloading the metadata without checking it, but this would be easily exploited for censorship of anything you don't like. And according to EFF's advice, you'd probably have to block ALL illegal content, not just child porn. And anyone using the blacklist would have to trust the person who publishes it - especially as the blacklist would have to not include the full CHKs but only enough information to match them, without being able to decrypt them. A whitelist is possible maybe. But it'd have to be a separate network, and it'd be enormously, and dangerously, centralised.
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