I’m not so sure. I follow several ‘white and grey hat hackers’ figbting jihadists online. So far....they haven’t been exposed. Either they ARE gov.....or they cover their tracks well.
Its not that difficult to hide tracks.
1) Buy used laptop; cash.
2) Run laptop off a live CD (backtrack?) and spoof mac address.
3) Park in a lot where Starbucks is offering free/open wifi.
4) have fun.