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Web Security

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Error 526 Ray ID: 47bd21715b73c5da • 2018-11-18 20:19:12 UTC

Invalid SSL certificate

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The origin web server does not have a valid SSL certificate.

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The SSL certificate presented by the server did not pass validation. This could indicate an expired SSL certificate or a certificate that does not include the requested domain name. Please contact your hosting provider to ensure that an up-to-date and valid SSL certificate issued by a Certificate Authority is configured for this domain name on the origin server. Additional troubleshooting information here.

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Originally published in Queue vol. 2, no. 4
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Paul Vixie - Go Static or Go Home
In the end, dynamic systems are simply less secure.


Axel Arnbak, Hadi Asghari, Michel Van Eeten, Nico Van Eijk - Security Collapse in the HTTPS Market
Assessing legal and technical solutions to secure HTTPS


Sharon Goldberg - Why Is It Taking So Long to Secure Internet Routing?
Routing security incidents can still slip past deployed security defenses.


Ben Laurie - Certificate Transparency
Public, verifiable, append-only logs



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