how can thay do it?

guy today i was at DF with my noope acc
i got pt inv and when we end the application we got IN
all the ppl at the pt kicked and one acc login DF (wasn't the leader for the pt )
is that some of hack or what guys ?
and is there any thing to stop somthing like that ?

what...?

Are you saying everyone in the party got kicked , along with the leader?

everyone in the party got kicked
the leader was my friend he kicked to
and low lvl mage was with use she go in
i tried to PM her but no answer

if thats tru than the mages a big hacker but it is very unlike.