I’m not sure exactly how police hunt down “illegal” activities on the Internet though, streaming pirated IPTVs without using any protection against ISPs is not a good idea I think. Do you use IPTV? If so, is your connection on a VPN or Tor (streaming on Tor would be a horrible experience though)?
Generally VPN’s are a good idea. I think the level to which streaming is policed depends both on your ISP and the laws of your country. An ISP that is part of a big conglomerate that owns media companies (eg. Virgin) might have more financial incentives to go after people who stream content “unofficially”.