Learn smart
contract hacking.
For free.

25 lessons. 4 hands-on labs.

Start your free trial

Access instructions emailed within 2–3 business days.

JohnnyTime

Learn with JohnnyTime

What you’ll learn

Video lessons

  • Smart contract security fundamentals
  • Reading and analyzing Solidity
  • Setting up your testing environment

Hands-on labs

  • Find and exploit vulnerabilities
  • Work in Hardhat or Foundry
  • Follow detailed solution walkthroughs

Frequently asked questions

25 smart contract hacking lessons, 4 exploit labs in Hardhat or Foundry, and access to our Discord community. Practice Solidity security and auditing fundamentals at your own pace.

Basic programming knowledge is helpful. New to Solidity? Start with CryptoZombies before working through the labs.

We review your request and email access instructions within 2–3 business days.

Keep learning with the free lessons, or upgrade to the full smart contract auditing course: 300+ lessons, 50+ exercises, certification, and lifetime updates.

Request free access