Ethereum smart contracts provide a selfdestruct function that allows them to destroy a contract on the blockchain system. It is, however, a two-edged sword for developers. On the one hand, the selfdestruct function allows developers to delete smart contracts from Ethereum and transfer Ether in the event of an emergency, such as an attack. On the other hand, this function might add to the development’s complexity and provide an attack channel for attackers.
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Source: Cryptocurrency - investing.com
