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What is the concern with security?

• pritambaral 12y ago
  If you let others host their content in a subdomain, like github.com did with Github Pages, they may get your main domain cookies.
  • mynameisvlad 12y ago
    That's a ridiculously specific use case, and unless you're making a web host service, you're not really going to be running into that security issue. It's good to think about, but unlikely to happen.
    • hueving 12y ago
      It's not that specific. I know lots of companies will use a third party service for something like a helpdesk and will setup support.theirdomain.com to point to the third party. The cookies for the root may then be leaked to the third party.