Even better, hack the Ad network so that requests are redirected to dodgy sites, not only obscuring any actual criminal activity, but also landing lots of people on a watchlist.
The poor state of security on an ad network you have never heard of could flag you as a person of interest subject to much closer surveillance, without you ever knowing about it (at least not until the Police come knocking at 6am for your computers).
Biting the hand that feeds IT
