Next time when you need to submit your projects but don't have time to complete it..Simply Corrupt or Scramble your file and ask your Boss/Teacher for extra Time to fix the problems..

Your original files are never touched they are safe in their original Location.

Scrambling the file will Result in destroying the content of files based upon the intensity level you choose. So that the file can be still opened but the content of the file will be scrambled

Corrupting the file will simply corrupt the file and the file will not get opened.