Cloud access security brokers or CASBs are cloud-based security solutions that protect sensitive corporate data on cloud services. CASBs act as an intermediary between users and cloud service providers. You can imagine it as a central data authentication and encryption hub, and it acts like a firewall that allows enterprises to extend the security control beyond their network boundaries.
As cyber exploits have become highly advanced and threaten cloud services, it is essential to identify the loopholes to fill the gaps in real-time. Active monitoring helps organizations to check data breaches or leakage of confidential information. CASBs give you deeper visibility into the cloud operation.
CASB solutions allow you to monitor and control the transfer, management, storage, and retrieval of cloud server’s data. With a CASB solution, you can control activities and information across public and custom cloud SaaS apps and IaaS services. The various functionalities of CASB into 4 pillars, which include visibility, compliance, data security, and threat protection.
The global cloud access security broker (CASB) application market status CASB market is projected to grow from USD 8941.1 million to USD 36910 million by 2026 with a CAGR of 22.2%. CASB is increasingly emerging as a baseline for the IT industry for improving cloud security. To select the right CASB solution providersSaas for your organization, ensure that the solution integrates appropriate security tools. DLP capabilities of CASB enable you to check the data leakage in real-time. A CASB has multiple use cases for the enterprise. Here are the five use cases of CASBs.

Shadow IT uses information technology systems, devices, software, applications, and services that the central IT department does not manage. Shadow IT has the potential to introduce unknown and unmanaged risks into the cloud platform. CASB enables you to discover, monitor, and secure shadow IT. It allows you to identify which cloud apps and services are being used across your organization. Both the managed and unmanaged cloud IT services are checked with the help of the CASB solution.
You need to confirm if all the cloud apps and services meet the internal security policies and the relevant industry or compliance requirements. CASBs allow you to assess the risk and compliance of your cloud apps. Once you analyze the risk and compliance, you can leverage your cloud app potential by searching for enterprise-ready alternatives.
CASBs continuously monitor to detect new and risky cloud apps automatically. It detects changes in cloud app’s usage pattern and alerts the system administrators when new, risky or high-volume apps are discovered in your cloud environment.

  • Govern Device Usage

The next important use of CASBs is to monitor and control user activities across cloud apps and services. Sensitive corporate data is the most valuable asset of any enterprise. CASB checks when the users are accessing cloud services from a mobile or desktop app or sync client. It also governs access to public cloud services by device ownership class.

  • Secure Data

Data protection is a critical factor that needs to be practised by your organization. CASBs help to protect and check the exfiltration of data from your organization. CASBs enable organizations to gain visibility into corporate data stored in sanctioned and connected cloud apps. You can ensure safe collaboration and data sharing practices in the cloud with a CASB solution.
It can configure controls that are applied to the user actions in real-time. You can enforce adaptive session controls to manage user actions such as preventing data exfiltration by blocking certain actions like malicious uploads and massive unauthorized sharing of files. Without blocking the services, CASBs can monitor and control user activities with collaboration tools and social media in real-time.

  • Block Malware

If a user identity is compromised, or an employee carries out risky actions across a cloud environment, your IT company needs to trace it in real-time. CASB enables you to capture a detailed audit trail of user and admin activities across the cloud services. It monitors events like sign-ins, downloads or uploads, and lateral movements to identify compromised user accounts and detect potential cyber threats.
Malware is becoming a significant security concern for organizations. CASB solution enables your organization to closely monitor cloud storage applications to determine if any file has malicious content and is associated with known malware. CASB solution allows you to leverage session controls to prevent the upload and infiltration of known malware in real-time across all cloud apps.
You can consistently review the cloud apps and create policies that automatically revoke access if certain apps have malicious content. Besides external threats, CASBs detect threats from users inside your organization. It alerts you about mass downloads by an internal user, unusual, repeated activities, excessive uploads, or sharing with sanctioned and unsanctioned cloud services.

  • Assess and Protect Your IaaS Environment

Cloud infrastructure services, or Infrastructure as a Service (IaaS), are made of highly scalable and automated compute resources. It requires continuous auditing to ensure that these cloud instances have been configured correctly. CASB capabilities allow you to conduct a security configuration assessment across your IaaS environments. You can identify leak sources and monitor user activities within the custom cloud and on-premise apps in your IaaS environments using a CASB solution.

To Conclude:

Cloud Access Security Broker should support multiple deployment modes to ensure complete coverage of key use cases in your organizations. Some of the significant use cases are to secure shadow IT, govern device usage, secure data, and block malware.
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