IT Security refers to the protection of computer systems and networks from theft, damage, or unauthorized access. It involves implementing various measures, such as firewalls, encryption, and antivirus software, to safeguard sensitive information and ensure the integrity of data. Organizations prioritize IT Security to prevent cyberattacks, which can lead to data breaches and financial losses. By following best practices and staying updated on the latest threats, businesses can create a secure environment for their digital assets and maintain the trust of their customers.