It appears that a new HTTP attack was created that affects OWA with compression turned on called BREACH ( http://security.stackexchange.com/q/39925/396 )
This is an update to previously known attacks on SSL such as BEAST and CRIME.
Question
Can any compression be safely used with Exchange 2010? And should the UI warn me that I'm degrading security by enabling compression?
http://security.stackexchange.com/q/39967/396