I have a dedicated server, which hosts 2 domains, let's say A and B. I know about the cross-origin policy, that is impossible to read the cookies from another domain, but is it somehow possible to do it when they have the same hardware/owner/server/file system, etc?
I have realized an interesting thing, I have ads on domain A, and there are a lot of cookies from ad networks. How they did do it? Can I do something similar with my two domains?
Thanks for the answers/suggestions, I have really no experience in this sphere.
