Last Update: Feb 25, 2024

Learn how to secure blockchain applications by examples

  • Free

About Course

In this course you learn how to secure blockchain applications. This course covers all practical aspects of blockchain security that exist in the blockchain environment today. This course provides a detailed overview of all blockchain security issues, including threats, risk mitigation, node security integrity, confidentiality, best security practices, advanced blockchain security and more.

Existing architects, software developers, system and network administrators who are responsible for implementing, identifying, and managing security on their blockchain network. Also, those who are responsible for, and are required to mitigate, recognize, and resolve blockchain security problems.

Learning Objectives

By finishing this course, you can take away the following:

  • Identifying and differentiating between security threats and attacks on a blockchain network.
  • Discussing blockchain security approaches, best practices, risk mitigation, and more.
  • Reviewing all known or emerging cyber-attacks on the Blockchain.
  • Performing blockchain network security risk analysis.
  • Understanding of blockchain’s inherent security features and risks.
  • Learning best security practices for blockchain system/network administrators.
  • Demonstrating appropriate blockchain data safeguarding techniques.

Topics and Subtopics

Here is the list of topics and subtopics that are covered in this course:

1. Overview of Blockchain

  • Core Components
  • Blocks
  • Chains
  • Network (public vs. private, permissioned vs. permissionless)
  • Demo
  • Working of Blockchain
  • Shared Ledger
  • Cryptography
  • Public/Private Key
  • Hash Function
  • Wallet
  • Consensus
  • PoW
  • PoS
  • BFT
  • PoET
  • Smart Contracts

2. Overview of Ethereum

  • Understanding Ethereum Blockchain
  • Understanding Transaction Gas and Miners
  • How Ethereum Transactions works
  • Lab on Ethereum Blockchain and Smart Contracts

3. Overview of Hyperledger Fabric

  • Understanding Hyperledger Fabric Blockchain
  • Understanding Asset and Ledger
  • How Hyperledger Fabric Transactions works
  • Lab on Hyperledger fabric Blockchain and Smart Contracts

4. Foundational Blockchain Security

  • Hash Function
  • Public Key Cryptography
  • Eliptic Curve Cryptography

5. Advanced Cryptographic Techniques and Methods

  • Multi-signatures
  • Zero-knowledge Proofs
  • Stealth Addresses
  • Ring Signatures
  • Confidential Signatures

6. Network-related Vulnerabilities, Attacks and defense

  • Network attacks
  • 51% attack
  • DDoS
  • Eclipse attacks
  • Replay attacks
  • Routing attacks
  • Sybil attacks
  • Node attacks
  • Cryptojacking
  • Miner exploits

7. User-related Vulnerabilities, attacks and defense

  • Wallet considerations
  • Hot vs. cold (hardware wallet)
  • Best practices
  • User Attacks
  • Air Drops and Hard Fork Scams
  • Fake Wallets
  • Fake Sites
  • Wallet Exploits

8. System/Process-related Vulnerabilities, attacks and Defenses

  • Verge Attacks
  • Pigeoncoin Hack
  • SPV Mining Exploit

9. Smart Contract-related Vulnerabilities, attacks and defenses

  • Primer on Solidity and smart contracts – Ethereum
  • Regulatory Drivers
  • Legality
  • Characteristics and Programming
  • Smart Contract Audit Considerations
  • Tools
  • Top attack techniques
  • Access control
  • Default visibility
  • Reentrancy
  • Integer overflow and underflow
  • Unchecked return
  • Timestamp manipulation
  • Bad randomness
  • Front running
  • Denial of services
  • Short address
  • Coding analysis
  • Control flow analysis
  • Error handling
  • State management
  • Dynamic code analysis
  • Manual code analysis
  • Automated code analysis
  • Best practices for smart contracts

10. Security of Alternative DLT Architectures

  • CIntroduction to DAG-Based DLTs
  • Advantages of DAG-Based DLTs
  • Limitations of DAG-Based DLTs


Good knowledge of blockchain technology and cybersecurity concepts

Related Courses

Complete Training Bundle

If you are serious about becoming a pro blockchain specialist, you should enroll in our Complete Blockchain Development Training. This bundle covers all essential and practical topics related to blockchain design and development. For $290 monthly subscription, you can have access to 300+ hours of hands-on project-based training covering all courses related to blockchain technology like Hyperledger, Ethereum, Solidity, Blockchain Security, Corda R3 and more. Click here to learn more.

Private Tutoring Classes

To take skills you learn from this course to the next level, taking the following tutoring classes are highly recommended. It is also a great opportunity to discuss your questions and problems related to this course with an experienced instructor:

What Is Next?

After finishing this course, you can enroll in any of following classes:

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What Will You Learn?

  • Learn new things
  • Revamp your career
  • Target IT jobs
  • Sharpen your skills
Free access this course


  • A laptop or PC
  • Good Internet
  • Routine Study
  • Regular Join Class