50 Portfolio Project Ideas for Smart Contract Auditors

Create a searchable database of DeFi exploits with technical breakdowns, root cause analysis, and prevention strategies for each incident.

Build a comprehensive catalog of reentrancy variations including cross-function, cross-contract, and read-only reentrancy with code examples.

Develop a tool that simulates flash loan attacks against test contracts to demonstrate various manipulation techniques.

Create a testing environment demonstrating price oracle attacks including TWAP manipulation and spot price attacks.

Build a static analysis tool that detects common access control issues like missing modifiers and privilege escalation paths.

Write custom Slither detectors for vulnerability patterns not covered by default rules, such as protocol-specific issues.

Create a reusable fuzzing framework with invariant tests for common DeFi primitives like AMMs, lending, and vaults.

Build a tool that identifies potential gas griefing vulnerabilities in contracts with unbounded loops or external calls.

Develop a tool that validates proxy upgrade safety by checking storage layout compatibility and initialization patterns.

Create a scanner that identifies sandwich attack and frontrunning vulnerabilities in DeFi contracts.

Design a series of increasingly difficult smart contract CTF challenges covering various vulnerability classes.

Write detailed walkthroughs for Damn Vulnerable DeFi challenges explaining the thought process and multiple solution approaches.

Create a visual cheatsheet of security patterns and anti-patterns with code examples and real exploit references.

Develop a library of audit report templates with standardized vulnerability descriptions and severity classifications.

Record video walkthroughs of your audit process on open-source contracts, explaining your methodology.

Conduct a thorough public audit of a smaller protocol's contracts and publish your findings responsibly.

Compare the security architecture of similar protocols (e.g., Aave vs Compound) highlighting design tradeoffs.

Document your bug bounty hunting process and findings (with permission) to show real vulnerability discovery.

Analyze governance mechanisms of major DAOs for potential attack vectors like flash loan governance attacks.

Conduct a thorough analysis of cross-chain bridge architectures and their historical vulnerabilities.

Build a bot that monitors deployed contracts for suspicious transactions or state changes indicating exploitation.

Create a CI/CD pipeline that runs security tools (Slither, Mythril, custom checks) on every commit.

Build a system that scrapes security feeds and alerts on new exploits relevant to protocols you're monitoring.

Create a tool that monitors critical storage slots in contracts and alerts on unexpected changes.

Build a mempool monitoring tool that detects potential attack transactions before they're mined.

Research and document risks from centralized L2 sequencers including liveness failures and censorship attacks.

Analyze security considerations for ERC-4337 account abstraction including paymaster and bundler risks.

Research vulnerabilities in cross-chain messaging protocols and verification mechanisms.

Analyze security implications of new EIPs before they're widely adopted.

Research historical Solidity compiler bugs and build detector for affected contracts.