Cybersecurity aspect of Solidity smart contracts

I've been using this product called WhiteRabbitNeo for learning the cybersecurity aspects of smart contracts. Here's a conversation I'm having on learning about attack vectors on Solidity contracts.

Question: Given a Solidity contract for Ethereum, what are its most common attack vectors or vulnerabilities? How do i detect these? Show me in code.

https://www.whiterabbitneo.com/share/uts28nb

What do you guys think?

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