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Breachfolio
Latest insights

Practical knowledge for today's defenders.

Cybersecurity 101: the words that mean what. — illustration
LEVEL 1 · FOUNDATIONS
01/08
May 14, 20267 min read

Threat, vulnerability, exploit, risk — four words that get used interchangeably, and the one mental model that finally separates them.

How networks actually work — illustration
LEVEL 1 · FOUNDATIONS
02/08
May 10, 202611 min read

IP, TCP, DNS, TLS — traced through a single curl request. What each layer adds, and which ones an attacker can lie at.

Linux fundamentals for security, the working subset. — illustration
LEVEL 2 · WORKING TOOLS
03/08
May 06, 202613 min read

The 25 commands you will type every day, the five you will type in a hurry, and the file permissions that decide who owns the box.

Cryptography you can actually use. — illustration
LEVEL 2 · WORKING TOOLS
04/08
May 01, 20269 min read

Hashing vs encryption, symmetric vs asymmetric, and the three primitives you should reach for before rolling your own anything.

Threat modeling with STRIDE — illustration
LEVEL 3 · METHODS
05/08
April 26, 202615 min read

We pick a tiny web app and walk it through STRIDE, then write the prompt that gets an LLM to do 60% of the same work as a reviewer.

How to start in cybersecurity: the real roadmap. — illustration
LEVEL 1 · FOUNDATIONS
06/08
July 08, 202611 min read

The learning order that actually works, the official roadmap.sh path worth following, and the real job roles waiting at the other end.

Red team, blue team, purple team explained. — illustration
LEVEL 1 · TEAMS
07/08
July 08, 20269 min read

Red attacks, blue defends, purple closes the loop between them. What each one actually does day to day, and how they map to real roles.

How to actually learn cybersecurity. — illustration
LEVEL 1 · METHOD
08/08
July 08, 20269 min read

Why tutorial-hell happens, what active learning looks like in this field, and a weekly rhythm that survives past month two.

AI in cybersecurity: attack and defense — illustration
LEVEL 3 · SUB-PILLAR
Continue your path

Where artificial intelligence actually shows up in a defender's day-to-day — its own sub-pillar, worth a dedicated visit.