What is IT security?

IT security, also known as information technology security, refers to the practices, policies, and technologies used to protect computer systems, networks, and data from unauthorized access, attacks, or damage. IT security professionals work to safeguard sensitive information, detect and respond to security breaches, and ensure compliance with regulations. Their work involves implementing firewalls, encryption, intrusion detection systems, and other security measures to maintain the integrity, confidentiality, and availability of IT resources.