The Dutch intelligence service - AIVD - hacks internet web fora to collect the data of all users. The majority of these people are unknown to the intelligence services and are not specified as targets when the hacking and data-collection process starts.
Apparently what they do is get direct access to the mysql databases backing fora and then just download the entire thing.
Apparently what they do is get direct access to the mysql databases backing fora and then just download the entire thing.