Cheat Sheets

4 notes

• Diagnosing DNS Propagation Delays During a Host Migration

  How to tell a real DNS misconfiguration apart from ordinary caching delay during a host migration, using dig against the authoritative nameserver.

  dns · networking · troubleshooting · cheat-sheetUpdated Sep 18, 2026

• Email Triage Cheat Sheet

  A section-by-section framework for writing a real SOC email-triage report, down to the sentence starters that make it fast under pressure.

  email · triage · soc · cheat-sheetUpdated Sep 17, 2026

• Markdown — Practical Cheatsheet

  An example-driven guide to writing Markdown for READMEs, notes, and docs. This is a normal paragraph of text. Another paragraph — leave a blank line between…

  markdown · reference · cheat-sheetUpdated Sep 17, 2026

• Suspicious Email Artifacts

  Collect the key artifacts from a suspicious email (without clicking links or opening attachments) so you can report, block, or escalate with evidence. In the…

  email · forensics · cheat-sheetUpdated Sep 17, 2026