Home ยป The Altering of data so that it is not usable unless the changes are undone is Cyber Security & Cyber Crime MCQs The Altering of data so that it is not usable unless the changes are undone is April 21, 2022 15 Views Q. The Altering of data so that it is not usable unless the changes are undone is A. Biometrics B. Encryption C. Ergonomics D. Compression Answer: Encryption