A data leak is the unintentional exposure of sensitive data. Unlike a data breach, which typically involves a deliberate cyberattack, a data leak usually results from operational problems, including technical and human errors.
Causes of Data Leaks
Most data leaks result from operational problems. Common causes include
Misconfigured or unpatched infrastructure that unintentionally exposes data
Email misdirection, where sensitive data is sent to the wrong recipient
Cloud misconfigurations that make data publicly accessible
Device loss with unencrypted sensitive information
Over-privileged access, where employees have access to more data than they need
Inadequate security controls and monitoring
Prevention Strategies
Preventing data leaks starts with a strong, multi-layered cybersecurity approach and a commitment to data privacy. Key prevention measures include:
Applying the principle of least privilege to limit access only to necessary data
Training employees on cybersecurity awareness to educate staff on best practices and how to spot phishing and other threats
Adopting a zero-trust security approach that requires verification for all access requests
Using multi-factor authentication (MFA) to add extra protection beyond passwords
Implementing data loss prevention (DLP) tools to monitor and control data movement
Regularly auditing access permissions and security configurations
Deploying email security solutions that can detect and prevent misdirected emails containing sensitive data