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. Effective IT security also includes regular updates and monitoring to identify potential threats. Organizations often conduct training for employees to recognize phishing attempts and other cyber threats. By prioritizing IT security, businesses can protect their assets and maintain trust with customers and stakeholders.