I have a situation at work and don't quite know how to approach it. My position is privy to a great deal of highly confidential information. As such, I know a great deal about others' salaries, vacation entitlements, etc. I am in the process of negotiating a position change in my office and I am aware, due to this confidential info, that I am being offered fewer benefits than those in comparable positions with the same or less experience as I. How can I approach this? I don't know if I can cite the info I know as I only know it due to my position and any other employee would not know these things about others in comparable positions to theirs. Can I use this info when negotiating?