Well, this is one of those rare myriad of useful tests I have learnt in my MBA. My professor told me about this test.
So what is the 'newspaper test'?
Ok, here it goes: If at any time you ever have an ethical dilemma of whether I should or shouldn't then ask yourself this question: "Will I be ok with it if whatever I do will be published in a newsapaper and the whole world knows about it?"
If the answer is yes, then you have passed the newspaper test/ethical doubt and you can do it. If you fail the newspaper test, then better dont do it.