Cryptocurrencies and Blockchain Security Fundamentals: Build a Secure Foundation in Crypto and Blockchain

Join Sam Sehgal—who has 10+ years of experience leading cybersecurity programs in Fortune 100 companies—as he provides a practical introduction to how cryptocurrencies and blockchain networks are secured in the real world, with an emphasis on developing an attacker-defender mindset.

Sam starts by breaking down how cryptocurrencies work: from blockchain mechanics to the decentralized trust that powers digital assets. Then, he dives into the major security challenges at four critical layers and shares real-world examples (including past security breaches, such as the Ronin and Dao attacks) to help you better understand the unique security challenges in this space. Whether you're a security pro entering the cryptocurrency industry or a developer building on-chain apps, this course provides the technical foundation you need to identify and defend against key threats.

Learning objectives
Explain how cryptocurrencies work under the hood, including blockchain fundamentals and the decentralized trust model.
Recognize major threats across the cryptocurrency ecosystem—from wallets to exchanges to smart contracts—and how to defend against them.
Identify how to protect crypto users by securing wallets, safeguarding identities, and ensuring safe transactions.
Demonstrate how to secure critical Blockchain services like crypto exchanges, oracles, and cross-chain bridges against common attacks.
Describe how to strengthen smart contracts and decentralized applications (DApps) to build more secure crypto-powered ecosystems.