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by ixfo 671 days ago
Environment visibility is easy to get. If you pwn a box which has foo.internal, you can now impersonate foo.internal. If you pwn a box which has *.internal, you can now impersonate super-secret.internal and everything else, and now you're a DNS change away from MITM across an entire estate.

Security by obscurity while making the actual security of endpoints weaker is not an argument in favour of wildcards...