Security Intelligence

Public SSL & TLS
Security Intelligence Hub

Reference guides on TLS misconfigurations and Certificate Transparency, built from public CT-log data and industry research — free to read, no signup required.

Actionable fixes includedBased on public dataNo signup required
20+
Free Security Tools
29
In-Depth Guides
8
TLS Issues Explained
24/7
Automated Monitoring

Intelligence Guides

In-depth references on the TLS issues that cause real outages — free to read and share.

Top TLS Misconfigurations

Reference guide

The most common TLS/SSL configuration errors seen across the web — what causes each one, why it matters, and exactly how to fix it.

8critical issues explained with fixes

Certificate Transparency Monitor

Public data

How public CT logs record every certificate issued globally, and how to use them to detect rogue issuance for your domains early.

6M+certs logged per day across public CT logs

Why We Publish These Guides

Transparency and information sharing make the web safer. Certificate security affects everyone — so the knowledge should be public.

Understand the Risks

Learn which TLS misconfigurations actually cause outages and breaches, and how prevalent each one is.

Benchmark Your Domain

Run your own domain through our free checkers to see where your configuration stands.

Stay Ahead of Expiry

Pair these guides with automated monitoring so certificate expiry never takes you by surprise.