9 Common Smart Contract Vulnerabilities (under review)
Completion requirements
Lesson Summary: This lesson explores nine common vulnerabilities in smart contracts that can lead to security breaches and financial losses in blockchain applications, particularly in decentralised finance (DeFi) platforms. The vulnerabilities discussed include compromised price feeds, reentrancy issues, and unchecked external calls, among others. Students will learn how these weaknesses arise, their potential impacts, and best practices for addressing them through secure coding and rigorous smart contract audits.
Lesson Objectives:
- Identify and describe nine common vulnerabilities in smart contracts, including vulnerable price feeds, reentrancy, and unchecked external calls.
- Explain the potential risks and financial impacts associated with each vulnerability in blockchain applications.
- Understand the importance of secure coding practices and audits in mitigating smart contract vulnerabilities.
- Evaluate real-world examples of smart contract breaches to understand how vulnerabilities can be exploited and avoided.
Intro
Sometimes referred to as scams, other times referred to as vulnerabilities. If an exploit is found and used to the detriment of customers, they will feel scammed, irrespective of the intentions of the founders.