Expired SSL Certificate Took Down Google Bazel for 13 Hours
An expired SSL certificate caused a 13-hour Google Bazel outage in December 2025. With 200-day certs starting March 15, 2026, here's why this matters to you.
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Cloudflare 1.1.1.1 Certificate Scare: Unauthorized Issuance
Learn how unauthorized SSL certificate issuance for Cloudflare's 1.1.1.1 was detected via SSLboard, highlighting challenges in reporting security vulnerabilities.
The Path to 47 Days: SSL Certificate Lifetimes Are Shrinking
Explore the timeline reducing SSL/TLS certificate validity from 398 days to 47 days by 2029, enhancing web security through shorter lifespans.
No False Alerts: How SSLboard Ensures SSLcalendar Accuracy
Learn how SSLboard powers SSLcalendar with zero false positives, distinguishing used certificates via Certificate Transparency monitoring.
Public TLS Client Certificates: Sunset on June 15, 2026
Learn about the deprecation of public TLS client certificates. Chrome stops trusting them June 15, 2026—discover alternative authentication methods.
SSL Calendar Launch: The Perfect Tool for Certificate Tracking
Discover SSL Calendar, which uses familiar calendar interfaces to track SSL certificate expirations, combating tool fatigue with intuitive monitoring.