The problem is that 1 out of 10 people at assasins a hacker is. You need enough evidence to ban him, so you'll have to follow him. It takes around 30 mins to 5 hours before he's banned. Once the hackers are gone, new one will join the server. It's a cyclus that never ends and we are just tired of recording and want to play.
I understand your concerns but it will also take time to get new staff members as they can't randomly promote and would like to avoid making wrong choices, they are currently recruiting for about a month+ now and hopefully it would reduce the numbers of hackers once new staff are chosen. Players are the majorities, I'm sure some of them wouldn't mind recording and waiting for their reports.