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.
Latest modules
Most recent practitioner playbooks across every track. Filter by topic, level, or search in the sidebar.
SLH-DSA (SPHINCS+) — Hash-Based Signatures for the Long Haul
SLH-DSA (FIPS 205) is the conservative hash-based PQ signature alternative — security rests on hash functions only, no lattice assumptions. When to use it (root CAs, firmware), when not to (TLS, JWT). Module 8.
ML-DSA (Dilithium) Signatures — Replacing RSA and ECDSA in Code Signing, JWT, and PKI
ML-DSA (FIPS 204) replaces RSA and ECDSA for digital signatures. How lattice signatures work, three security levels, size impact on TLS/JWT/code-signing, the migration playbook. Module 7.
ML-KEM (Kyber) Deep Dive — Lattice-Based Key Encapsulation Explained
ML-KEM (FIPS 203) is the NIST-standard PQ key exchange replacing RSA and ECDH. Lattice math at intuition level, three security levels, hybrid TLS 1.3 deployment with concrete nginx/Apache/HAProxy/Cloudflare config. Module 6.
Post-Quantum Cryptography 101 — NIST FIPS 203, 204, 205 (ML-KEM, ML-DSA, SLH-DSA) Explained
NIST's final PQ standards orientation: ML-KEM (FIPS 203) replaces RSA/ECDH, ML-DSA (FIPS 204) replaces RSA/ECDSA signatures, SLH-DSA (FIPS 205) is the conservative hash-based alternative. Migration map and size impact.
Grover’s Algorithm — Symmetric Crypto’s New Math (Hint: AES-256 Wins)
Grover halves symmetric crypto security in bits — AES-128 weakened, AES-256 still safe. SHA-256 collision resistance halves but stays secure. Practical migration: use AES-256, SHA-384 for long-lived data. Module 4.
Shor’s Algorithm Explained — Why RSA and ECC Will Break
Shor's algorithm factorises integers and computes discrete logs in polynomial time on a quantum computer — breaking RSA and ECC. How it works at intuition level, hardware requirements, and the Mosca theorem applied. Module 3.
Why Quantum Matters for Cybersecurity — The Post-Quantum Threat in Plain English
The post-quantum threat quantified — what crypto breaks, when CRQC arrives, store-now-decrypt-later risk, Mosca theorem, and what your CISO should be telling the board today. Module 2 of the Quantum Computing track.
What is Quantum Computing — Qubits, Superposition, Entanglement (Beginner)
Quantum computing fundamentals for security practitioners — qubits, superposition, entanglement, gates, and what quantum computers can and cannot do. Module 1 of the RingSafe Quantum Computing track.
Sliver C2 Operator Guide — Implants, Transports, OPSEC, and the Detection Patterns Blue Teams Should Hunt
Sliver is the open-source post-Cobalt-Strike C2 framework — accessible to Indian red teams without licensing barriers, and the most-abused C2 after CS itself. Architecture, implant generation, transport choices, OPSEC patterns, and the defender-side hunt queries that actually catch it.
Burp Suite Pro 2026 — Five Production Bambdas and Three Custom BChecks (Paste-Ready)
Burp Bambdas (per-request JavaScript) and BChecks (YAML scanner checks) are the highest-leverage features in Burp Pro 2026. Five paste-ready Bambdas (sensitive data, JWT alg-none, parameter pollution) and three BChecks (open redirect, IDOR, CORS) for your next engagement.
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