Security Models: CIA and CIAAN

Information Security Wordle: PCI Data Security...

Image by purpleslog via Flickr

A simple & long-time applicable security model is the CIA triad; standing for Confidentiality, Integrity and Availability; three key principles which are guaranteed in any kind of secure system. As security continued to improve however, it has been clear that Authenticity and Non-Repudiation are also essential parts of a secure system. This newer principle is applicable across the subject of Security Analysis, from access to a user’s Internet history to security of encrypted data across the Internet. If any of these 5 pillars is in breach, it would mean serious consequences for the parties concerned.

Following, an in-depth analysis of the CIAAN model pillars:

Continue reading