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Blockchain Security - Foundational Concepts

LearnQuest via Coursera


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Blockchain Security - Foundational Concepts is where your grand adventure begins, at the crossroads of technology and creativity. This course is designed for aspiring blockchain enthusiasts, developers, security professionals, and decision makers. This course isn't a mere introduction; it's an invitation to explore the world of blockchain security with an artist's flair. Beyond theory's embrace, it pulls you into a universe where cryptographic techniques, smart contract development, and secure blockchain solutions aren't just words—they're a living, breathing dance guided by the hand of a master. After completing this course, learners will be able to grasp the core elements of blockchain technology and the security that guards them, identify common security risks, detail cryptography techniques, and more.


  • Welcome and Module 1: Intro to Blockchain Security
    • This module provides an introduction to blockchain security concepts, threats, and challenges. Students will learn foundational knowledge about blockchain architecture, vulnerabilities, and security goals.
  • Module 2: Cryptography, Hash Functions, and Public Key
    • This module covers cryptography techniques used in blockchain including hash functions and public key cryptography. Students will learn how these are used to secure blockchain transactions and build trust. A case study on the LISK blockchain will demonstrate real-world applications.
  • Module 3: Consensus, PoW, and PoS Security
    • This module explains consensus mechanisms in blockchain, specifically proof of work and proof of stake models. Students will analyze the security implications of different consensus models and examine a case study of vulnerabilities in the Verge blockchain.
  • Module 4: Advanced Blockchain and Architectural Security
    • This module dives deeper into advanced blockchain security topics including new mechanisms, cryptography tools, and architectural security. Students will gain skills to evaluate and design secure blockchain implementations.
  • Module 5: The Blockchain User & Node Security
    • This module focuses on security for blockchain users and nodes. Students will learn how to secure user wallets, keys, and transactions. Methods to secure blockchain nodes and prevent exploits will also be covered along with a case study of an Ethereum RPC vulnerability.

Taught by

Howard Poston


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