CISSP – the CIA Triad – Integrity!
We want system and Data integrity We use: Cryptography (again). Check sums (This could be CRC). Message Digests also known as a hash (This could be MD5, SHA1 or SHA2). Digital Signatures – non-repudiation. Access control. Threats: Alterations of our data. Code injections. Attacks on your encryption (cryptanalysis).