I don't see how using TLS would prevent MITM in this case. TLS only prevents MIT...

murbard2 on Nov 21, 2014 | parent | context | favorite | on: Let's Encrypt: How It Works

I don't see how using TLS would prevent MITM in this case. TLS only prevents MITM if you know public key or if it's been signed by a CA, but neither is the case here.