Chapter 8 of 10 · Web3 Security 80%

🏗️ Cream Finance: hacked three times in 2021. $130M on the last try.

October 2021, Cream Finance. A flash loan inflated a yUSD vault share price, the protocol used that share price as an oracle, and $130M walked out as inflated collateral. Composability turns one bug into every protocol's bug. 💸

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Web3 Security

🏗️ Cream Finance: hacked three times in 2021. $130M on the last try.

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Blockchain basics

Solidity security

Reentrancy attacks

Access control flaws

Flash loan attacks

Oracle manipulation

Analysis tools

DeFi attacks

Bridge security

Contract auditing