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Monitoring & security, explained

Practical, no-fluff guides on uptime and security monitoring — fixing security headers, email authentication, SSL certificates, and consolidating your monitoring stack.

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Latest post monitoring icmp

ICMP Ping Monitoring: When It's the Right Check, and When No Reply Doesn't Mean Down

When to use an ICMP ping monitor instead of a TCP or HTTP check, why firewalls drop ping, and how packet loss and round-trip time tell you more than up or down.

8 min read Read it
ICMP Ping Monitoring: When It's the Right Check, and When No Reply Doesn't Mean Down
ssl tls

Seven Months to 100-Day Certificates: A Prep Plan for March 2027

The 200-day certificate cap has been live since March. The 100-day step, and shorter domain validation reuse, land on 15 March 2027. A month-by-month plan.

7 min read
soc2 compliance

How Monitoring Supports SOC 2 and Compliance Evidence

How uptime and security monitoring supports SOC 2 audits, cyber-insurance questionnaires and client security reviews, and what evidence they ask for.

6 min read
change-detection defacement

Website Change Detection: Catch Defacement Before Your Visitors Do

How website change detection works (rendered DOM vs raw HTML, tuning out dynamic noise) and how to catch defacement before your visitors do.

6 min read
security-headers csp

How to Fix Your Content-Security-Policy (With Copy-Paste nginx, Apache and Caddy Configs)

A practical guide to building a Content-Security-Policy that works: how CSP is parsed, the directives that matter, and ready-to-paste server configs.

5 min read
email-security deliverability

Why Are My Emails Going to Spam? A Developer's Deliverability Triage Guide

A step-by-step deliverability triage for developers covering SPF/DKIM/DMARC alignment, IP and domain reputation, blocklists, and bulk-sender rules.

7 min read
agencies msp

White-Label Monitoring for Agencies: What It Actually Requires

What white-label monitoring requires for agencies and MSPs (resale rights, unbranded status pages, per-client workspaces) and how to package it.

6 min read
email-security dmarc

SPF, DKIM and DMARC Explained, and How to Stop Email Spoofing

A developer-friendly walkthrough of SPF, DKIM and DMARC, why p=none still leaves you spoofable, and how to reach enforcement without breaking mail.

5 min read
email-security dkim

DKIM Key Rotation: Selectors, 2048-Bit Keys and Zero-Downtime Swaps

How DKIM signing and selectors work, choosing 1024 vs 2048-bit keys, and a dual-selector DKIM key rotation process that swaps keys with zero downtime.

6 min read
dns dns-monitoring

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.

7 min read
monitoring consolidation

You're Paying for 5 Monitoring Tools. Here's How to Consolidate to One.

Small teams often pay separately for uptime, status pages, cron, DMARC and SSL monitoring. The monthly math, and how to fold it into one tool.

4 min read
safe-browsing security

Google Safe Browsing Blacklist Removal: Fixing "Deceptive Site Ahead" Step by Step

Google flagged your site with "Deceptive site ahead"? Why legit sites get blacklisted, how to clean up, request a review, and how long delisting takes.

6 min read

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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.