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Sep 21, 2025 DNS TLS networking privacy Let's Encrypt Synology

Privacy for subdomains

I recently learned about a new way to leak your privacy, and it’s a scary one. Before going further, know that I’m not a network engineer: perhaps if you work in the field, you’ve known it for your whole career, but it’s quite new to me. Let me share my findings and you can judge. Because the original post was quite lengthy, I broke it down into two instalments, the problem and the solution. The problem

Nicolas Fränkel
Sep 21, 2025 DNS TLS networking privacy

Privacy for subdomains: the problem

I recently learned about a new way to leak your privacy, and it’s a scary one. Before going further, know that I’m not a network engineer: perhaps if you work in this field, you’ve known it for your whole career, but it’s quite new to me. Let me share my findings, and you can judge for yourself. Since the original post was quite lengthy, I have broken it down into two installments: the problem and the solution. The situation I own my own domain. I’ve created mu

Nicolas Fränkel
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