The adoption of blockchain and cryptocurrency has been accompanied by significant financial based attacks, theft and fraud. In 2021, the targeted attacks on Decentralized Finance platforms reached $1.3 billion, a 2500% increase from 2020, and the majority of these DeFi platforms exploited were unaudited. Security is an area that crypto users and developers have to take seriously. The School of Security and Audit will cover common types of attacks and fraudulent means in which the blockchain and crypto industry have been attacked. This school also covers some of the best practices related to smart contract security, and the analysis of attack events.