CASB
Data ProtectionDefinition
Software that sits between cloud service users and cloud applications to monitor activity and enforce security policies.
Technical Details
Cloud Access Security Broker (CASB) is a security policy enforcement point that sits between cloud service consumers and cloud service providers. It acts as a gatekeeper, providing visibility, compliance, data security, and threat protection for cloud services. CASBs can operate in various modes, including API-based, reverse proxy, or forward proxy, allowing them to enforce security policies across multiple cloud applications. They help organizations manage user access, monitor data transfers, and protect sensitive information through encryption and data loss prevention strategies.
Practical Usage
In practice, organizations implement CASBs to enhance their security posture when migrating to cloud services. They can help enforce security policies by controlling user access to cloud applications, monitoring user behavior for anomalies, and managing the flow of sensitive data. CASBs are commonly used in industries with regulatory requirements, such as finance and healthcare, to ensure compliance with standards like GDPR or HIPAA. They also provide functionalities such as single sign-on (SSO), identity management, and auditing capabilities.
Examples
- A financial institution uses a CASB to monitor employee access to cloud-based financial applications, ensuring that sensitive data is encrypted during transmission and that access is logged for compliance audits.
- A healthcare provider implements a CASB to protect patient records stored in a cloud service by enforcing data loss prevention measures that prevent unauthorized sharing of sensitive data.
- A retail company uses a CASB to analyze user activity across multiple cloud platforms, detecting unusual access patterns that might indicate a security breach.