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HTTPS Hides the Page, Not the Hostname: What Your ISP Still Sees

Everyone knows the padlock means "encrypted". Fewer people know what it leaves out. When your browser opens https://example.com , it sends a first message to the server called the ClientHello.

  • HTTPS encrypts data but not hostname
  • Hostname visible to ISP in ClientHello
  • Encrypted Client Hello hides hostname

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