Chapter 1 of 10 · Web3 Security 10%

⛓️ 850,000 Bitcoin gone. No chargebacks. No insurance.

Mt. Gox lost 850k BTC in 2014 and the chain still remembers every wallet. Learn what immutability really costs, why smart contracts magnify it, and the four properties every auditor checks first. 💸

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Web3 Security

⛓️ 850,000 Bitcoin gone. No chargebacks. No insurance.

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Course Chapters

Blockchain basics

Solidity security

Reentrancy attacks

Access control flaws

Flash loan attacks

Oracle manipulation

Analysis tools

DeFi attacks

Bridge security

Contract auditing