Data exfiltration refers to the unauthorized transfer of data from a computer or network. This can occur through various methods, such as malware, phishing attacks, or insider threats. The goal is often to steal sensitive information, like personal data or trade secrets, which can lead to financial loss or reputational damage for organizations. To prevent data exfiltration, companies implement security measures like firewalls, encryption, and employee training. Monitoring network traffic and using intrusion detection systems can also help identify suspicious activities. Protecting data is crucial for maintaining the integrity of systems and safeguarding customer information.