QR Codes
QR Code Security: Risks, Defenses and a Checklist
QR code security explained for scanners and for brands: how quishing, sticker overlays and dangling redirects work, and the controls that stop them.
October 24, 2026
Security
Email DNS Records Explained: A Practical Guide
Email DNS records explained: how MX, SPF, DKIM and DMARC protect deliverability and stop spoofing, plus how to check and troubleshoot each record.
October 22, 2026
Automation
What Is Model Context Protocol and How It Works
What is Model Context Protocol? Learn how MCP connects AI assistants to tools and data, how hosts, clients and servers work, and how to deploy it safely.
October 19, 2026
Security
Let's Encrypt 45-Day Certificates: Timeline and How to Prepare
Let's Encrypt is cutting certificate lifetimes from 90 to 45 days between 2026 and 2028, and the CA/Browser Forum caps every public certificate at 47 days by 2029. The dates, what changes for renewals, ACME vs manual, and a checklist for redirect domains.
July 1, 2026
Security
Is redirhub.top Affiliated With Us? — Security Advisory
The domain redirhub.top is not owned, operated, or endorsed by RedirHub in any way. It is an impersonation domain used in a malvertising campaign — read our full security advisory.
June 27, 2026
Security
SSL Redirects: How to Redirect a Domain over HTTPS Without Certificate Errors
Why https:// redirects break, how to set up an SSL redirect that works on the root and www, best practices (301, HSTS, no chains), and how to keep HTTPS working across hundreds of redirect domains.
April 11, 2026