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Cloud Access Security Broker (CASB)

What is a Cloud Access Security Broker?

A Cloud Access Security Broker (CASB) is a security solution or service that acts as an intermediary between an organization’s on-premises infrastructure and cloud services, helping to secure and manage data and applications that are hosted in the cloud. CASBs are designed to address the unique security challenges that arise when organizations adopt cloud computing and cloud-based services.

Key functions and features of a A Cloud Access Security Broker (CASB) include:

  1. Visibility: CASBs provide visibility into an organization’s cloud usage, helping administrators understand which cloud services are being used, who is using them, and what data is being shared or stored in the cloud. This visibility is crucial for risk assessment and compliance monitoring.
  2. Data Security: CASBs offer data protection capabilities, such as data encryption, tokenization, and access controls. They help ensure that sensitive data is properly protected both at rest and in transit within cloud services.
  3. Access Control: CASBs can enforce access policies based on user identities, devices, and locations. They can help prevent unauthorized access to cloud applications and data by enforcing policies like multi-factor authentication (MFA) and conditional access.
  4. Threat Detection and Prevention: CASBs can monitor cloud traffic for potential security threats, including malware, phishing attempts, and anomalous user behavior. They can take actions to block or remediate these threats.
  5. Compliance and Governance: CASBs assist organizations in complying with industry regulations and internal security policies. They provide reporting and auditing capabilities, helping organizations demonstrate their compliance with data protection and privacy standards.
  6. Shadow IT Discovery: CASBs can identify and manage shadow IT, which refers to the use of unauthorized or unsanctioned cloud services within an organization. This helps organizations regain control over their cloud usage and security.
  7. Cloud Service Control: CASBs can provide granular control over specific cloud services, allowing organizations to customize policies and settings for each service they use.

CASBs can be deployed in different ways, including as software agents, cloud-based services, or hybrid solutions that combine on-premises and cloud components. The choice of deployment depends on an organization’s specific needs and existing infrastructure.

In summary, a Cloud Access Security Broker is a critical component of a comprehensive cloud security strategy, helping organizations secure their data and applications as they embrace cloud technologies and services.

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