DeFi Smart Contract Vulnerabilities Audit Guide

Here's a thinking process:

1. Analyze User Request:

   • Topic: DeFi smart contract vulnerabilities
   • Quantity: 3 common ones
   • Requirement: Specific detection methods
   • Format: List format

2. Identify Key Vulnerabilities in DeFi Smart Contracts:
   I need to pick 3 of the most common, impactful, and well-documented vulnerabilities in DeFi smart contracts. Obvious candidates:

   • Reentrancy attacks
   • Integer overflow/underflow (though less common now with Solidity ^0.8.0, still relevant in older code/other languages)
   • Access control issues (owner-only functions, proxy admin takeover)
   • Front-running / MEV related issues
   • Logic errors in financial operations (e.g., incorrect math, oracle manipulation)
   • Timestamp dependence
   • Authorization bugs (approve/unapproved)

Let's pick the