What is CASB

Cloud Access Security Brokers (CASB) is a security framework that helps organizations control and protects their cloud-based data. CASB is a software tool that sits between the on-premises infrastructure of an enterprise and a cloud provider. A CASB serves as a gatekeeper allowing the company to expand its security policy scope beyond its own infrastructure. So let’s discuss what is CASB and its various features.

CASB typically offers the following:

  • Firewalls for identifying and preventing malware from entering the enterprise network.
  • Authentication to verify the credentials of users and ensure that they can access appropriate company resources.
  • Web application firewalls (WAFs) to thwart malware intended to compromise application-level security, rather than network-level security.
  • Prevention of data loss (DLP) ensures the user is unable to transfer confidential information outside of the company.

CASB, and how does it work?

CASBs operate by ensuring network traffic between on-site devices, and a cloud provider follows the company’s security requirements. Security brokers’ importance for cloud access comes from their ability to provide insight into cloud application. Its uses across cloud platforms and unsanctioned use of identity. That is particularly important in regulated industries.

CASBs use auto-discovery to classify cloud applications using and identify applications and users at high risk and other risk factors. Cloud access brokers can implement various security access controls, including encryption and system profiling. They can also provide additional services, such as credential mapping, where there is no single sign-on.

Types of CASBs:

  • API-only, which provides management only. Such CASB uses SaaS Apps API access to fix events after data-leak.
  • First-Gen multi-mode providing management and security, but not protection from Zero-Day. Such provides signature protection for identified routes of data leakage and a fixed collection of applications.
  • Multi-mode Next-Gen protecting management, security, and the Zero-Day. These CASB dynamically adapts to any application to protect against known and unknown data leakage risks and malware threats.

Vendors for CASB:

 CASB Vendor and what are its requirements:

  • Management: Visibility during high-risk incidents and clean-up.
  • Security: Avoidance of high-risk events such as data leakage and intrusion threats.
  • Day Zero Protection: Protection against known and unknown risks of data leakage and threats to malware.


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