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.
Modern Cryptography Fundamentals
Symmetric, asymmetric, hashing, MACs, password hashing, RNG, libsodium, post-quantum status, the cardinal rule.
TLS in Practice
TLS 1.2/1.3, cipher suites, handshake, certificate validation, HSTS, CT, common misconfigurations, testing with testssl.sh.
PKI Architecture
CAs, cert types, ACME, lifecycle, revocation, internal PKI, service mesh PKI, code signing, lifetime trends.
Secrets Management at Scale
Vault, dynamic secrets, rotation strategies, CI/CD secrets, leak detection, multi-environment isolation, audit.
GRC Fundamentals
Governance, risk, compliance — the operating loop, frameworks, board reporting, common program failures.
HTTP Request Smuggling
CL.TE / TE.CL / TE.TE, HTTP/2 downgrade smuggling, exploitation impacts, detection via timing, defenses.
API Gateways & Zero-Trust at Scale
Kong, Apigee, AWS API Gateway, service mesh (Istio, Linkerd), zero-trust architecture, observability stack.
IoT & OT Security Fundamentals
IoT vs OT, the Purdue model, defender constraints, threat landscape, notable real-world OT incidents.
IoT Device Security Testing
Hardware reconnaissance, UART/JTAG, firmware extraction with binwalk, BLE/Zigbee testing, cloud API audit.
Industrial Control Protocols
Modbus, DNP3, OPC-UA, S7Comm, EtherNet/IP, BACnet — protocol attack surfaces and defenses.
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.
Why learn here
Practitioner-written.
Each lesson is authored by someone who has shipped the control or run the engagement in production.
Quiz after every module.
20+ questions with explanations. 70%+ to mark complete. Unlimited retries.
Progress tracked.
Completions, scores and streaks saved automatically. Resume exactly where you left off.
India-priced.
Start free. ₹499/mo for intermediate. ₹4,999/yr for advanced. No hidden fees, ever.