
1) Commercial crime
Found on
https://www.crosswordclues.com/clue/pranknet

Pranknet, also known as Prank University or Prank U, is a Canadian-based anonymous prank calling virtual community responsible for damage to hotels and fast food restaurants of more than $60,000 as well as multiple instances of telephone harassment. It was founded by a man who later referred to himself as `Dex` (alleged to be a Canadian man name.....
Found on
http://en.wikipedia.org/wiki/Pranknet
No exact match found.