this post was submitted on 29 Jan 2024
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Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ
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You can avoid these scans by only using wildcards on your DNS entries and SSL certificates.
Both of these are commonly used by bots to find new domains.
Wildcard SSL subjects make sense as the certificate is public. But how does wildcard DNS help? They aren't public other than the requests coming from the client which don't use wildcard anyway.
I would not depend on DNS records being private. On the off chance that one of the nameservers messes up, I would prefer if no subdomains are leaked.
But you're correct, most of the time those leaks happen somewhere else.