One must be seriously naive to believe that the FBI is not involved knee deep in such dark places on the web. If it was honestly that difficult to get into illegal sites on the web, then there wouldn't be anyone there for criminals to peddle their illegal wares to.
Law Enforcement agencies have those places on lock and simply bide their time in regards to investigations.
Yes, such announcements are used as political tactics, but they serve a greater purpose overall in emboldening criminals so that they fuck up more often and get caught as a result.
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