Slashdot reader UnderAttack writes: Certificate Transparency is a system promoted by companies like Google that requires certificate authorities to publish a log of all certificates issued. With certificate transparency, you can search these logs for any of the domains you own, to find unauthorized certificates. However, certificates are not only used for public sites. And with all certificates being published, some include host names that are not meant to be publicly known. An update of the standard is in the works to allow entities to obfuscate the host name, but until then, certificate transparency logs are a good recognizance source.

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Source: Slashdot – The Dark Side of Certificate Transparency