Cybersecurity, learned like a practitioner.
24 learning paths · 398 modules live · every lesson written by someone who has shipped the control or run the engagement. Free to start.
Expert · modules
Modules tagged Expert. Use the sidebar to narrow by track or topic.
AI Security & Red Teaming
Attack and defend AI systems — the field almost no one teaches. OWASP LLM Top 10, prompt injection, jailbreaks, guardrails, RAG poisoning, model extraction.
Multi-Cloud — The Complexity Tax
Per-cloud skill, divergent defaults, N × CSPM. Multi-cloud without investment = weaker overall security.
Hybrid AD — On-Prem Meets Cloud
Entra Connect crown jewel, Golden SAML, Azure AD attacks, AZUREADSSOACC$ legacy, PRT theft.
AD Detection — What Good Looks Like
Event IDs, Sigma rules, Defender for Identity, Sentinel KQL queries. From generic SIEM to mature AD detection.
Why Network Detection Underperforms
Encrypted traffic, volume overload, alert fatigue. Why attacker dwell time is weeks to months on average.
The Framework-Assumption Gap
'The framework handles it' is the most dangerous phrase in modern web security. Escape hatches, third-party integrations, and non-REST transports.
Race Conditions in Web Apps
TOCTOU, single-packet attacks, where races hide, Burp testing, transactional + idempotency-key defenses.
Prototype Pollution
JS prototype model, pollution sources, attack vectors (auth bypass, RCE chains), Object.create(null) defense.
Hybrid AD & ADFS Attack Surface
Entra Connect crown jewel, ADFS Golden SAML, PHS attacks, on-prem ↔ cloud lateral movement, Tier 0 isolation.
Insecure Deserialization
Java/.NET/Python/PHP/Ruby deserialization vulns, gadget chains, ysoserial, signed-data defense.
Practitioners who've
shipped the controls.
Every module is written by someone who has built the defence or run the engagement. No repackaged tutorials, no generic theory.
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Practitioner-written.
Each lesson is authored by someone who has shipped the control or run the engagement in production.
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