Information technology (IT) security, also known as cybersecurity or information security, is a field dedicated to protecting information and information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. It involves safeguarding all aspects of computing and networking, including hardware, software, data, and communications.
IT security is essential for businesses and organizations of all sizes, as it helps to protect sensitive data, maintain compliance with regulations, and prevent financial losses. Historically, IT security has focused primarily on protecting against external threats, such as hackers and malware. However, in recent years, there has been a growing recognition of the importance of also protecting against internal threats, such as data breaches caused by employees or contractors.