Security monitoring Header grades + copy-paste fixes Email security SPF / DKIM / DMARC monitoring Uptime & API Second-probe confirmed checks Status pages Hosted, white-label status LiveStatus TV walls Full-screen status on any TV Reports & SLA Scheduled PDF / CSV evidence
All features →
Free tools Pricing Blog Compare Docs
Sign in Start free
The CompleteStatus Blog

Monitoring & security, explained

Practical, no-fluff guides on uptime and security monitoring — fixing security headers, email authentication, SSL certificates, and consolidating your monitoring stack.
RSS feed
All posts security 23 uptime 21 monitoring 19 incidents 18 outages 10 tls 9 https 9 dns 8 ssl 8 performance 8 email-security 6 security-headers 5
dns dns-monitoring

DNS Monitoring — What to Actually 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 trumps it all.
· 7 min read
domains dns

Domain Expiry — The Outage Nobody Monitors

How domains actually lapse, what the grace, redemption and auction timeline costs at each stage, and how domain expiration monitoring prevents it all.
· 6 min read
uptime incident-response

Website Down? The Exact Checklist to Diagnose and Fix It

Your website is down. Here's the triage runbook: confirm it's real, isolate DNS vs TLS vs server vs app with actual commands, and communicate like a pro.
· 6 min read
checklist dns

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.
· 6 min read
outages dns

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.
· 6 min read
dns redundancy

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.
· 6 min read
dns ssl

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.
· 6 min read
dns ddos

The Dyn Attack — DNS Is the Single Point of Failure Everyone Forgets

Last Friday a botnet of cameras and DVRs took down Dyn's DNS — and Twitter, Reddit and Spotify with it. Lessons on DNS redundancy, TTLs and monitoring.
· 6 min read

Monitor your site — free

Uptime, SSL, DNS, security-header grades and SPF/DKIM/DMARC — one dashboard, one bill. The free tier includes the security layer and allows commercial use.
Start monitoring free Try the free tools
Uptime is table stakes. We watch the rest — security headers, email authentication, certs and DNS, with the fix attached.
Start free
Product
Security monitoring Email security Uptime & API Status pages LiveStatus TV walls Reports & SLA Pricing
Free tools
Security header checker DMARC checker SSL checker DNS lookup Uptime test
Resources
Blog Compare All features Docs
Company
About Contact Status
Account
Sign in Start free Terms Privacy
© 2026 CompleteStatus. All rights reserved. CompleteStatus — operated in the United States · support@completestatus.com
Terms Privacy Docs