Integrity

Information or Data should be protected against any unauthorized changes. Integrity preserves the accuracy and completeness of the information. Let me ask you this question?

How will you verify that the software you download is an authentic or original executable/binary published by the software provider? 
- Software companies generally publish the hash value of the software along with it. To verify the integrity of the software, you'll compute the executable hash and match it with the one posted by the software provider.