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How do smart contracts work? and who creates them?
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Hello friend, this is all done by blockchain auditors, who perfectly know the structure and design of smart contracts, they are always able to find vulnerabilities if they exist. If you are interested in who exactly does this, read this article about crypto audit companies.
https://cyberhacks.io/6-the-best-crypto-audit-companies-2022-2023/
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they are always able to find vulnerabilities?