I made the worrying discovery today that after cropping a screenshot in Word, PowerPoint, and probably other Microsoft Office programs, the rest of the cropped screenshot is retained. This has made me fairly paranoid as I frequently take screenshots and crop them down to show the relevant piece of information, before sending the PowerPoint off to others. I assumed when you saved the document, the cropped portions of the image were discarded, but looking at work from years ago, I can still uncrop the rest of the image to see my entire screen.

Is there a way to disable this? This seems like a ridiculous security flaw.