Blog
Practical security and app-building notes from Glen Waverley, Melbourne. Written by Yogesh, tested on our own domain first.
📡THREAT INTEL
Tracking when public IPs change
An IP is a lease, not an identity. Why blocklists and allowlists rot, and how to build a change-tracker — with a hands-on lab.
🧩SAAS & VENDORS
What your DNS reveals about the software you use
SPF includes, DKIM selectors and verification records list the tools connected to your domain. How to read them and tidy up.
📋KNOWLEDGE BASE
How to read your DNS Audit report
What the grade, the severity labels and each section mean, the findings people ask about most, and what to do next.
🔎EMAIL SECURITY
What your DNS exposes: email, web and attack surface
How to read your own email, website and subdomain records, what should be public, and what to clean up.
✉️EMAIL SECURITY
DMARC explained, with a real domain
SPF, DKIM and DMARC in plain English, plus a hands-on lab: send as [email protected] and watch DMARC pass.