Community
Connect with security researchers, auditors, and practitioners building a safer Web3.
Communities
Secureum
Premier smart contract security bootcamp and community. Offers structured learning paths from Solidity basics to advanced auditing techniques.
FreeImmunefi
Largest Web3 bug bounty platform. Connects security researchers with protocols offering bounties for vulnerability discoveries.
FreeSpearbit
Distributed network of expert security researchers providing peer-reviewed smart contract audits through a decentralized guild model.
OpenZeppelin Forum
Official community forum for OpenZeppelin Contracts, Defender, and security best practices. Active discussions on ERC standards, upgrade patterns, and vulnerability disclosures.
FreeEthereum Security Community
Broad Ethereum security community spanning researchers, auditors, and developers. Coordinates responsible disclosure, shares threat intel, and discusses EVM security primitives.
FreeCode4rena Discord
The most active competitive auditing community. Wardens share techniques, discuss findings, and collaborate on improving their auditing skills through contests.
FreeDeFi Safety
Independent protocol review platform that scores DeFi projects on process quality, documentation, and security practices. Useful for evaluating project maturity beyond just code audits.
FreeBlockSec
Security research team focused on real-time attack detection and post-incident analysis. Known for detailed exploit breakdowns and their Phalcon transaction explorer.
FreeParadigm CTF
Premier Capture The Flag competition for smart contract security. Challenges range from basic Solidity puzzles to advanced DeFi exploits. Essential practice for aspiring auditors.
FreeEthereum Cat Herders
Ethereum core coordination group that tracks EIPs, protocol upgrades, and security-relevant changes. Useful for staying informed about consensus-layer security developments.
FreeCantina
AI-native security marketplace by Spearbit connecting protocols with vetted researchers through competitive audits, managed reviews, and guild-based engagements.
Hats Finance
Decentralized audit competition and bug bounty marketplace where auditors stake their own funds, creating skin-in-the-game incentives for quality findings.
FreeFlashbots
Research and development organization working on MEV and the future of fair transaction ordering. Active community discussing MEV protection, PBS, and block building.
FreeNotable Experts
Hadrien Croubois
Smart Contract Engineer at OpenZeppelin