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As a consequence of the increased focus on the open internet, the use of the Dark net
and similar deep web resources has expanded, especially for non-filers who have no
interest in being investigated by the STA or other authorities. We have started to
monitor the most common market-places on the Dark net using their open source
tools. We haven’t had much luck yet identifying vendors on the Dark net but we are
convinced that we need to observe this part of the web as well in case more vendors
move their businesses in order to avoid detection. The best result we have had is that
we found some connections between usernames on the Dark net as on the internet,
where the possibility to identify the real person is much larger. The tricky part is to
verify that it is the same person. We have also found a couple of message boards with
lots of interesting threads by searching on different usernames.
When the search for information about non-filers on the internet gets more difficult
due to increasing possibilities to be anonymous and to use encrypting services, we
have realized that we need to focus on the one thing we and the vendors have in
common, the payment.
In Sweden the STA can quite easily get information such as account statements,
business deals etc. from banks and other third parties. This has of course led to the

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