

Ethereum Token Standards Mastery Hub Practice Test 2026 | Ex
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Within the ERC-20 token standard, the `transferFrom` function allows for delegated token transfers. What is the primary security implication and mitigation strategy associated with this function if not implemented correctly?
Consider an ERC-20 token contract where the `mint` function is intended to be callable only by the contract owner. If the `onlyOwner` modifier is incorrectly implemented, allowing any address to call `mint`, what is the most severe consequence for the token's integrity and value?
In the context of an ERC-20 token contract designed for a decentralized exchange (DEX), what is the crucial benefit of implementing the `transfer` and `transferFrom` functions to emit a `Transfer` event upon successful execution?
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