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If they've hijacked a subdomain, they can submit it to LetsEncrypt and get a cert. LetsEncrypt checks that you control a domain by asking you to serve some data
by erpellan 6y ago
If they've hijacked a subdomain, they can submit it to LetsEncrypt and get a cert. LetsEncrypt checks that you control a domain by asking you to serve some data from it. The domain is already hijacked so from LetsEncrypt's perspective it's yours.