Everything you need to audit, secure, and deploy smart contracts safely. Free AI tools, vulnerability guides, and security research — by Blockhertz.
Run Free Audit$3.4B
Lost to hacks in 2025
98%
Fewer hacks with audits
10+
Vulnerability classes detected
60s
Free AI audit time
Free tool
Paste any Solidity, Rust, Move or Vyper contract. Get a complete security report with risk score, findings, and fix recommendations in under 60 seconds. Free. No signup.
Supported: Solidity · Rust · Move · Vyper
Audit Your Contract FreeBuilding on Hardhat? Try hardhat-blockhertz → — CI-friendly plugin, MIT license
Deep dives into the most costly smart contract vulnerabilities — with real examples and fixes.
MythX combines symbolic execution, fuzzing, and static analysis from ConsenSys. Blockhertz uses LLM-based AI to catch business logic vulnerabilities MythX can’t find. Here’s which tool to use — and when to use both.
Read Guide
Instant AI security audits for any deployed smart contract — straight from Telegram. Send /audit 0xYourAddress and get a risk score plus top findings in under 30 seconds. Free, no signup, no install. Supports Ethereum, Base, Arbitrum, Optimism, Polygon, and BNB Chain.
Read Guide
$3.4 billion stolen from blockchain projects in 2025. Access control failures cost $953 million. Audited contracts have 98% fewer hacks. Complete blockchain security statistics for 2026 — updated monthly by the Blockhertz team.
Read Guide
Integer Overflow in Solidity: What It Is, Real Examples, and How to Prevent It (2026) An integer overflow vulnerability occurs when arithmetic operations exceed the maximum value a data type can hold...
Read Guide
Blockhertz AI Auditor and Slither are both free smart contract security tools — but they serve different purposes. This guide compares both to help you choose the rightone for your workflow.
Read Guide
Missing access control vulnerabilities allow anyone to call restricted functions in your smart contract. Learn how the $611M Poly Network hack happened and how to protect your contracts with onlyOwner and role-based access control.
Read Guide
Learn what reentrancy attacks are, how the $60M DAO hack happened, and how to prevent reentrancy in Solidity with CEI pattern, ReentrancyGuard, and pull payment examples. Free vulnerability checker included.
Read Guide
A complete guide to smart contract security auditing in 2026. Learn the top 10 vulnerabilities every blockchain developer must check before deploying — with a free checklist and AI audit tool.
Read Guide
Learn the 15 most impactful Solidity gas optimization patterns in 2026. Includes code examples for storage packing, custom errors, unchecked arithmetic, and more. Use the free AI Gas Optimizer to apply all patterns automatically.
Read Guide
Real world asset platforms are high-value targets. Special security considerations for tokenization contracts.
The 10 vulnerabilities most likely to destroy a tokenization project — with vulnerable code, fixes, and audit checklist.
Every smart contract we ship at Blockhertz includes an AI pre-audit plus manual review before mainnet deployment.
Run your contract through the free AI auditor in under a minute. Fix the criticals before mainnet.
Run Free Audit