Cheat sheets you'll actually keep open.
A practical library of glossaries, command references, quick-lookups and checklists for AI and cybersecurity. Evergreen pieces you bookmark and come back to.
Cybersecurity acronyms, decoded.
The first month of cybersecurity is mostly acronyms. A working glossary you can keep open while you read everything else.
OWASP Top 10 (2025): quick reference.
The current edition, in plain language — what changed from 2021, and what each category actually means for your codebase.
Common ports, worth memorising.
The two dozen TCP/UDP ports that come up constantly, grouped by role, with what each is for and why it matters on a scan.
Linux commands for a security check.
Who is logged in, what is listening, what changed, where the risky permissions are — a read-only triage reference.
The first 24 hours of an incident.
A calm, ordered checklist for a suspected incident, built on the NIST phases: confirm, contain, eradicate, recover, learn.
The most recognized cybersecurity certifications, compared.
Security+, CEH, OSCP, CISSP — what each one actually tests, who it's really for, and which is worth your money at each career stage.
Network command glossary: ip, ss, netstat, tcpdump.
Half the classic networking commands are deprecated and everyone uses them anyway. Which one to actually reach for, and when.
Linux server hardening checklist: from zero to production.
A fresh install is not a secure one. The real steps — access, network, patching, services, logging — before that box touches production.