Expert Insights & Best Practices

Knowledge Hub

Deep insights, real-world case studies, and proven strategies from the trenches of certificate and expiration management

Security Insights

Certificate Formats Explained: PEM, DER, PKCS#12, and More

In February 2022, a global Microsoft Teams outage left millions of users unable to connect for hours. The culprit wasn't a network failure or a buggy deployment; it was a single, forgotten authenticat...

Tim Henrich

Dec 22, 2025

9 min read

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Security Insights

Beyond Renewal Dates: A Guide to Enterprise Domain Portfolio Optimization

In most enterprises, domain names are treated like office supplies: purchased when needed, managed by various teams, and only given attention when a renewal notice arrives. This decentralized, reactiv...

Tim Henrich

Dec 22, 2025

7 min read

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Security Insights

Beyond Spreadsheets: A Practical Guide to Infrastructure as Code for Certificate Management

In early 2023, a single expired internal TLS certificate brought down a swath of Microsoft Azure services, including Storage, SQL DB, and Cosmos DB. This wasn't a sophisticated cyberattack; it was a s...

Tim Henrich

Dec 19, 2025

8 min read

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Security Insights

Beyond Passwords: A DevOps Guide to API Security with mTLS

In the world of API security, we've become comfortable with bearer tokens, API keys, and OAuth 2.0. These methods are effective for user authentication, but they share a common vulnerability: they rel...

Tim Henrich

Dec 19, 2025

8 min read

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Security Insights

The Security Goldmine You're Ignoring: A Guide to Certificate Transparency Monitoring

For years, IT and DevOps teams have viewed TLS certificates through a singular lens: expiration. The primary concern has been avoiding the dreaded "Your connection is not private" error that brings se...

Tim Henrich

Dec 18, 2025

7 min read

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Security Insights

Breaking the Chain: A Deep Dive into TLS Certificate Chains and Trust Paths

In July 2024, Starlink experienced a global outage that left users offline for over three hours. The cause wasn't a satellite malfunction or a software bug, but something far more common and preventab...

Tim Henrich

Dec 18, 2025

8 min read

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Knowledge Hub

Certificate Formats Explained: PEM, DER, PKCS#12, and More

Beyond Renewal Dates: A Guide to Enterprise Domain Portfolio Optimization

Beyond Spreadsheets: A Practical Guide to Infrastructure as Code for Certificate Management

Beyond Passwords: A DevOps Guide to API Security with mTLS

The Security Goldmine You're Ignoring: A Guide to Certificate Transparency Monitoring

Breaking the Chain: A Deep Dive into TLS Certificate Chains and Trust Paths

Topics

Featured

Beyond the Breach: A Modern Playbook for Surviving Certificate Authority Incidents

Beyond the Spreadsheet: How to Ace Your SOC 2 Audit with Modern Certificate Monitoring

Beyond Spreadsheets: Level Up Your Security with the Certificate Management Maturity Model