After you have reconstructed only a series of informal, internal correspondence, you suddenly become quite restless. In front of you is the design drawing of the said product. Bingo! You have reached your goal and the competing company will now be in trouble. This could be the case if you did not pay attention to the different safety levels when you destroyed confidential files and simply disposed of them in any shredder. Because data is not equal data, there are different levels of confidentiality, which should be taken into consideration during the destruction. For this reason, a DIN standard was introduced for file shredding, which classifies data into seven different security levels and recommends an annihilation recommendation for each level.