Consensus Algorithm Security

This course introduces blockchain consensus algorithms and discusses the security of two major consensus algorithms.

7 videos  //  88 minutes of training

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Course description

Consensus algorithms are essential to a distributed, decentralized ledger, where a network of nodes must agree on an official version of the ledger without a central authority. This course describes the underlying principles of consensus algorithms, how two of the primary consensus algorithms work under the hood and how they can be attacked.

Course syllabus

Course IntroductionDuration: 1:57

This video introduces this course, providing an overview of topics to be covered.

Introduction to Blockchain Consensus AlgorithmsDuration: 14:29

This video introduces some of the fundamental principles behind blockchain consensus algorithms and describes some common ones.

Proof of WorkDuration: 10:04

This video introduces the Proof of Work consensus algorithm and describes how it works.

Attacking Proof of WorkDuration: 17:21

This video discusses attacks against Proof of Work consensus algorithms.

Proof of StakeDuration: 12:15

This video introduces the Proof of Stake consensus algorithm and describes how it works.

Attacking Proof of StakeDuration: 29:51

This video discusses attacks against Proof of Stake consensus algorithms.

Course RecapDuration: 2:12

This video reviews the information covered in this course and introduces the next one.

Meet the author

Howard Poston

LinkedIn

Howard Poston is a cybersecurity researcher with a background in blockchain, cryptography and malware analysis. He has a master's degree in Cyber Operations from the Air Force Institute of Technology and two years of experience in cybersecurity research and development at Sandia National Labs. He currently works as a freelance consultant providing training and content creation for cyber and blockchain security. He can be reached by email at [email protected] or via his website at https://www.howardposton.com.

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