Todd H. Gardner on Mythryl: “Let's Encrypt quietly ran a mass revocation drill last week. 3…”

Let's Encrypt quietly ran a mass revocation drill last week. 3 million real certificates. Most automation never noticed. That's the problem.

CertKit SSL Certificate Automation@certkit.io

Let's Encrypt ran a mass revocation drill on 3 million production certificates in March 2026. They shortened ARI windows to simulate an emergency and watched who responded. Most ACME clients never noticed. www.certkit.io/blog/lets-en... #PKI #ACME

certkit.ioLet's Encrypt simulated revoking 3 million certificates. Most ACME clients didn't notice.Let's Encrypt ran their first annual mass revocation drill, shortening ARI renewal windows across 3 million production certificates. Here's what happened.

30/3/26, 2:40 pm0 reposts0 likes

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