In its most basic defintion, information security means protecting information and information systems from unauthorized access, use, disruption, or destruction. The terms information security, computer security and information assurance are frequently used interchangeably.
Institutions of all sizes collect and store huge volumes of confidential information. The information may be about employees, customers, research, products or financial operations. Most of this information is collected, processed and stored on computers and transmitted across networks to other computers. If this information fell into the wrong hands, it could lead to lost business, law suits, identity theft or even bankruptcy of the business.
Information security has evolved significantly and grown even more important in recent years. From a craeer perspective, there are even more areas where a professional can work in the field. Some of the specialty areas within Information Security include network security, application and database security, security testing, information systems auditing, business continuity planning and digital forensics science, among others.