Cops need license to hack in order to be able to:
1. Fight distribution of child abuse images online, for example via the TOR network;
2. Disable botnets;
3. Quickly intercept and store data that would otherwise be highly volatile or difficult to access (due to encryption);
4. Thwart cyber threats and attacks from exotic locations.
Dutch language news article:
http://www.nu.nl/internet/2934565/opstelten-stelt-hackrecht-politie.html
