The Web3 Security Resources Hub is a comprehensive collection of curated tools, guides, and best practices for securing decentralized systems and smart contracts in the blockchain space.

A huge list of alternatives to Google products. Privacy tips, tricks, and links.

A list of public audit reports conducted by the Cyfrin team

A collection of Solidity security exercises and puzzles to test your knowledge of Solidity's more esoteric features. Some are easy, and some are exceptionally challenging.

A sequence of smart contracts to practice gas optimization. These are used as practice assignments for RareSkills.io and the Udemy Gas Optimization Course

Exercises to learn the syntax of Circom and create EVM compatible zero knowledge programs.

A 6-part series on how to use Echidna on real-world codebases

This is the markdown for the ZK Book

Guidelines and training material to write secure smart contracts

Practical tutorials of Certora Prover

A curated list of blockchain security Capture the Flag (CTF) competitions

A summary of 200+ CTF blockchain challenges

⚡️ Ethernaut CTF 2024 Challenges & Solutions

A curated list of awesome directed fuzzing research papers

The ultimate, most advanced, security, DeFi, assembly, web3 auditor course ever created.

Blazing Fast Bytecode-Level Hybrid Fuzzer for Smart Contracts

Reproduce DeFi hacked incidents using Foundry.