IT Security: IT security are always found in any major enterprise / establishment due to the nature and value of the data within larger businesses. They are responsible for keeping all of the technology within the company secure from malicious cyber attacks that often attempt to breach into critical private information or gain control of the internal systems.
Information assurance: The act of ensuring that data is not lost when critical issues arise. These issues include but are not limited to natural disasters, computer / server malfunction, physical theft, or any other instance where data has the potential of being lost.