That's where Cccam infophp come's in handy you might have a client that is abusing your card "Comedy Central" and "Sly Sports 2" are very common channel's you might have about 30 people watching them channel's at the same time.
Thing is with Cccam you really cant protect your card unless you use Cccaminfophp and look at the ecm rates etc, I ran a server as a hobby and soon got sick of dealing with dick head's hammering my card I had enough after a few week's.
I now just use oscam with no stranger's and I havent had to touch it for over 6 month.
Like wiz said in his post using Cccam with Oscam the Cccam takes all reshare right's away from oscam with Cccam it's impossible to protect your card. People just add your Cline in Oscam as a server ignore your re-share right's BINGO your card is now there's.