That only works to some extend. You'd need a different story for each suspected leaker and you can't fake what people are actually working on.
One strategy would be to subdivide Tasks in to small enough segments that you don't know what the big thing is you are actually working on. But this lack of overview might be very hindering/expensive.
One strategy would be to subdivide Tasks in to small enough segments that you don't know what the big thing is you are actually working on. But this lack of overview might be very hindering/expensive.