*this* Hacker is too good a name for them, they are certainly not hackers.

If you use DayZ Commander you can write notes for yourself about certain servers. I find this helpful if I find a certain server gets hacked a lot. It took me a few servers till I found two that don't seem to get hacked at all, both are private but not whitelisted, and I play on them exclusively now. The difference between servers seems to be the dedication of the admins, good admins usually equals a good server which equals a lot less hacking.