Curated

Resources

Hand-picked tools, references, cheat sheets, and links that actually get used in the field.

Network diagnostics — DNS, MX, blacklists, SMTP.

Search engine for internet-connected devices.

Command line syntax reference for Windows, Linux, and PowerShell.

The definitive framework for managing cybersecurity risk.

Analyze suspicious files, URLs, and hashes.

Official CVE vulnerability database.

Quick-reference cards for common admin tasks — Linux commands, firewall syntax, AD queries, regex, and more.