Intrusion Prevention refers to a security measure designed to detect and prevent unauthorized access to computer systems or networks. It works by monitoring network traffic for suspicious activities and known threats. When a potential intrusion is identified, the system can take immediate action, such as blocking the malicious traffic or alerting administrators. This technology is often part of a broader security strategy that includes firewalls, antivirus software, and intrusion detection systems. By actively preventing intrusions, organizations can protect sensitive data and maintain the integrity of their systems, reducing the risk of data breaches and cyberattacks.