Top Smart Contracts Vulnerabilities Businesses Must Know

 Smart contracts are the codes deployed on the Blockchain that execute transactions and processes upon meeting specific conditions. Smart contracts are an easy target for cyber-attackers since patching the vulnerabilities after deployment is complex.


Smart contract flaws pose a serious security risk, perhaps resulting in capital collapse and financial losses. Here are a few smart contract vulnerabilities businesses must know.

Reentrancy Attacks

Reentrancy attack vectors occur due to the imperative execution of Solidity smart contracts; every line of code must run before the subsequent code execution. When a contract attempts to make an external call to another contract, the execution of the calling contract stops until the call returns.

A malicious contract, for instance, could make a recursive call back to the original contract asking it to withdraw the resources without waiting for the first call to complete. It restricts the original contract from updating its balance before the function ends.

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