Why people mad about cookies?

Me try to keep up with the news but there's lots of news me not understand. For instance! People at NSA (that must be place that help you learn letters) use its web site to give people cookies! Me think that good news! But lots of people mad about that. What the hey? Cookies tasty and yummy! Someone give you cookies, you say "thank you" and "please give me more cookies because me like to eat cookies!" Sometimes me not understand people!