Information Security (InfoSec) is the practice of defending information from unauthorized access, use, disclosure, disruption, modification, perusal, inspection, recording or destruction. It is a general term that can be used regardless of the form the data may take (electronic, physical, etc…) 
Three (3) security initiatives that fall under InfoSec are:
- Computer Security (COMPUSEC): is used to prevent unauthorized access to telecommunications while still allowing its users access and falls under InfoSec. Its goal is to maintain the confidentiality, integrity, and availability of DoD classified and unclassified information that has not been approved for public release during transmission. It protects traffic on military communications networks, including voice, video, and data and is used for both analog and digital applications, and both wired and wireless links.
- Information Assurance (IA): is used to protect and defend information and information systems by ensuring their availability, integrity, authentication, confidentiality, and non-repudiation. This includes providing for the restoration of information systems by incorporating protection, detection, and reaction capabilities.
- Communications Security (COMSEC): is used to prevent unauthorized access to telecommunications while still allowing its users full acces.
AcqLinks and References: