Cyber Security

Pass the CCSP on your first attempt. This 2026 guide covers all six domains, the new adaptive (CAT) exam format, and the August 2026 outline refresh with AI security woven throughout. Clear explanations, exam-style reasoning, and a proven study plan take you from registration to certificate.

Master offensive and defensive security techniques across smart contracts, DeFi protocols, bridges, rollups, consensus systems, and next-generation Web3 infrastructure.Blockchain ecosystems secure billions of dollars in digital assets, making them a persistent target for sophisticated cyberattacks. From reentrancy vulnerabilities and oracle manipulation to flash loan exploits, bridge compromises, governance attacks, and Layer-2 weaknesses, blockchain security requires expertise spanning cryptography, distributed systems, protocol engineering, and adversarial analysis.

Smart Contract Security: Finding DeFi Vulnerabilities is a comprehensive technical guide to understanding, identifying, and mitigating security vulnerabilities in Ethereum smart contracts and decentralized finance protocols. The title begins with the foundations of EVM architecture, Solidity execution, storage layout, threat modeling, and access control before progressing into the most important vulnerability classes encountered in modern smart contracts. Topics include reentrancy, read-only reentrancy, arithmetic and precision issues, denial-of-service patterns, unchecked calls, transaction-ordering dependencies, MEV, and integration risks.

Design, Build, and Operate Autonomous AI Systems for Modern Cyber DefenseCybersecurity is evolving beyond traditional automation toward intelligent systems capable of continuously analyzing security telemetry, investigating threats, coordinating specialized tools, and executing controlled defensive actions. This shift introduces new engineering challenges involving agent architecture, decision-making, authorization, operational reliability, and the verification of security-critical actions.

Learn how expert penetration testers find what scanners miss. This practical guide takes you from the foundations of offensive security to advanced assessment techniques, teaching you how to uncover, validate and chain weaknesses then turn technical findings into clear, useful results.

See what your network traffic is really revealing. This practical guide breaks down TLS fingerprinting, JA3/JA4 and HTTP client identification, then shows you how to put them to work with Python, Go and Rust. From protocol internals to production pipelines, learn how to identify clients at scale without losing sight of privacy or operational reality.

Adversaries are recording encrypted traffic today to read it once a quantum computer arrives. NIST published the replacements in 2024, and OpenSSL ships them now. This is the migration: measured on one laptop with stock OpenSSL 3.5.5, with every claim labeled verified, reported, or proposed.