We have been issuing a token using the standard erc20 token contract from https://ethereum.org/token
An exchange that we wanted to list our token, asked for a collateral as they see the burnFrom function could harm token owners.
Why would this function be harmful? You can only use this function when you got allowance from the wallet owner.
Plus, why is this code in the 'standard' erc20 contract if it is potentially harmful?

Does anyone has an answer to this question?