If you are competing with someone for anything in any kind of contest and they make a BIG mistake that you can turn to your advantage withing the predetermined rules, you are not only stupid if you don't use it to your advantage but you have an OBLIGATION to the others on your side to do your best to exploit it.
If you stumble onto someones personal information in this way, then what you say would apply. You tell them so they can secure it ASAP. It would be wrong for you to look for a way to turn that kind of thing into an advantage.
But if your in a battle and the enemy has left his battle plan open for you to look at, you don't give it back without looking at it, and making copies!
We are in a FIGHT with the leftist in this country. This is not a GAME.
So if they fight dirty, we fight dirty. If they cheat, we cheat. That's all fine and dandy, but when the day comes when we want to rally undecided and independant voters to our cause, and they reply "you're just as bad as the other guys", that we will have only ourselves to blame.