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Re: [tor-talk] dutch police crawling hidden servers

On Tue, Aug 05, 2014 at 03:09:29PM -0400, Andrew Lewman wrote:
> On 08/05/2014 01:58 PM, Rejo Zenger wrote:
> > How would they have done that? Of course, there are wiki's listing 
> > hidden services, but they are most likely far from complete and I 
> > wouldn't expect websites with hardcore child abuse to be "advertised" 
> > there. So, what do you think this crawler did?
> Unfortunately, the hardcore sites are/were advertised on one of the 20+
> hidden wikis which exist at any time. The press and police only seem to
> find these sites and assume everything is just this set. There are
> seriously 20+ hidden wikis, each one claiming to be the
> original/canonical wiki.
> Given the resources of a national police force, it seems probable they
> can create a crawler to simply crawl every permutation of hidden service
> addresses on port 80 alone.
> Of course, it's easier to crawl the 20+ hidden wikis and go from there.

I seriously doubt anyone is going to be crawling the 80-bit space of HS
key hashes by brute force like that.  They'll be running some sort of
enumeration attack to gather the descriptors or a web crawler.

Andrea Shepard
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