How to secure my ERC20 Smart Contract address coin for my own ICO?

[mcmak]

Dear All,

i hv a ERC-20 smart contracts questions.

If i were to outsource my ERC-20 development and website to some 3rd party to build for an ICO.

End of the day the developer will provide me a smart contract address to receive the ETH for the ICO.

questions is

1. how do i secure it from the programmer to access and transfer out the ETH from the smart contract addresses?
2. how do i get people to audit the basic smart contract code to prevent developer to put in hanky panky code?