Articles
DNS Monitoring: What to Watch, and Why Hijacking Is the Scary Part
Which DNS records to monitor, how to spot hijacking and unauthorized changes, TTL strategy, registrar security, and why domain expiry is the worst case.
Domain Expiry: The Outage Nobody Monitors
How domains lapse, what recovery costs at each stage from grace period to auction, and how expiry monitoring catches it early.
Website Down? The Exact Checklist to Diagnose and Fix It
Your website is down. A triage runbook: confirm it's real, isolate DNS vs TLS vs server vs app with actual commands, and keep users informed.
The January Infrastructure Audit: A Checklist for Everything You've Been Ignoring
Expiring domains, stale DNS records, untested backups, orphaned access. The once-a-year infrastructure audit that prevents this year's outages.
AWS in October, Cloudflare in November: Two Outages, One Lesson About Hidden Dependencies
A DynamoDB DNS race in us-east-1 and an oversized Cloudflare config file took down much of the web within a month. What both teach about hidden dependencies.
The Facebook Outage — What BGP and DNS Taught Everyone This Week
Facebook, Instagram and WhatsApp vanished for six hours this week after a BGP misstep took out their DNS. What the outage teaches every team about resilience.
Choosing a DNS Provider — Redundancy for the Layer Everyone Forgets
DNS is the dependency in front of every other dependency. Anycast, secondary DNS, TTL strategy, DNSSEC trade-offs — how to pick and pair providers.
CAA Records Explained: Control Which CAs Can Issue Your Certificates
From September 8, every certificate authority must check CAA records before issuing. What CAA is, the syntax, and how to add it without breaking anything.
The Dyn Attack: DNS Is the Single Point of Failure Everyone Forgets
Last Friday a botnet of cameras and DVRs knocked out Dyn's DNS, and Twitter, Reddit and Spotify with it. Lessons on DNS redundancy, TTLs and monitoring.
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