Anonymity & OpSec
Practical self-defence for people who are not security professionals and do not intend to become them. Threat modelling first, tools second — because the tool you need depends entirely on who you are hiding from.
Not yet reviewed
The question every other decision depends on, and the vocabulary to answer it honestly.
The single application that leaks the most about you, and the handful of choices that decide how much.
How people are actually found — not by broken encryption, but by the account they forgot and the password they reused.
The most practical privacy decision most people make daily — which app carries their conversations, and what "encrypted" actually buys them.
A real forum, two features that both worked exactly as designed, and a person who became locatable.
- Attack
- Telemetry
- Fix
- Detection
Labs
Hands-on challenges for this course. Each one hides a flag you have to find.
Exam
Timed, and it issues a credential anyone can verify. Practice quizzes are untimed; this one is not.