When I first entered the workforce, I was surprised at the number of times that I would hear managers say things like "Let's not tell the client about this until we know whether or not this is a real issue". I couldn't fathom what was so wrong with letting the client know about all of the risks that you're tracking and what you're doing to mitigate them.
As I moved up through the ranks, and began interacting with clients more, I began doing things my own way.