There seems to be multiple proposals on Area51 about computer related security:
Maybe they aren't exact duplicates, but for many questions I think there is hard to know which one to ask the question on. I think they would be stronger together merged as one site.
E.g. if I wonder about "ARP poisoning" that could be placed on "Application Security" in the form of "How can I protect my application against ARP poisoning" or on "Computer Security" in the form of "How can I protect my system against ARP poisoning" or on "Network Security" in the form of "How can I protect my network against ARP poisoning". Okey, it's maybe a bad example, but it is hard to distinguish between the sites.
What is the difference between them? And should it be better if they was merged to one site?