Cloud access security brokers or CASBs are cloud-hosted security solutions or on-premises software or hardware to protect sensitive corporate data on the cloud applications and services. It is a part filter, part proxy, and part firewall and acts as an intermediary between users and cloud service providers. It is deployed in cloud applications to identify high-risk applications, high-risk users, and other risk factors. It can detect and alert the admin about the unsanctioned cloud applications, Shadow IT, and the sensitive data in transit.
CASB can address the gaps in security across software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS) environments. It allows you to maintain visibility and control in these environments for effective collaboration and sharing. Some of the significant security features of CASBs are cloud governance and risk assessment, data loss prevention, threat prevention, and malware detection, configuration auditing, data encryption, and key management, and contextual access control.
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%. Cyber exploits have become more sophisticated than ever, and hence it is essential to address the security issues in cloud services in real-time. CASBs enable you to monitor and control the transfer, management, and storage of data on cloud platforms. CASB solution providers extend CASB security services to various enterprises, and its functionalities center on 4 pillars, namely, visibility, compliance, data security, and threat protection. A CASB has multiple use cases, and these are:
Secure Shadow IT
Shadow IT exists without the knowledge of the central IT department in many organizations. To fight Shadow IT, it is paramount for IT departments to regain the lost visibility as it can introduce unknown and unmanaged risks into the cloud platform. Shadow IT can introduce security risks through data leaks, potential compliance violations, malware infiltration, and more. CASB helps you discover your cloud platform’s security posture to see what is happening in your network. It enables you to find, monitor, and secure shadow IT by identifying the managed and unmanaged cloud apps and services used in your organization.
A CASB helps meet the compliance standards of PCI, PII, HIPAA, and other standard regulatory protocols. It helps you assess the risk and compliance of your cloud apps, and it continuously monitors the apps to detect the apps that can pose risk automatically. It uses intelligent technologies to identify the usage pattern of the app and if any changes have occurred recently when new, risky or high-volume apps are discovered in the cloud platform.
Govern Device Usage
CASB acts as a security policy enforcement gateway to ensure the activities in the cloud platform are authorized and compliant with the company policies. It helps monitor and control user activities and checks when the users are accessing cloud services from a mobile or desktop app or sync client. It can audit historical data and restrict data access across cloud platforms. CASBs also govern access to public cloud services through device ownership class.
In cloud-based applications, CASBs deploy versatile security capabilities to protect and check the data exfiltration. CASBs provide detailed logs on all cloud transactions. Hence it records every activity related to logins, uploads, or downloads. It can identify and remediate any misconfigurations for infrastructure as a service (IaaS) platforms. CASB solution can configure controls that are applied to the user actions in real-time. During comprehensive monitoring, it does not block user activities with collaboration tools and social media. Hence it is considered to be an advanced security feature as compared to traditional methods.
CASB enables the system administrators to perform detailed audit trails of users across the cloud-based apps. It comprehensively monitors various activities, including sign-ins, downloads or uploads, and lateral movements. Some of the CASBs focus on creating a system that automatically detects scrutinizes and classifies any application. It can identify a compromised user account and detect potential cyber threats. It can closely monitor the content in the app to determine if it is malicious. Moreover, it can leverage session controls to prevent malware from infiltrating the cloud apps in real-time. Since enterprises are exposed to internal threats, CASBs can review activities like mass downloads or other repetitive and suspicious activities like excessive uploads or sharing with sanctioned and unsanctioned cloud services and alert the admin about the same.
Assess And Protect Your Iaas Environment
IaaS provides virtualized computing resources, virtual networking, virtual storage, and virtual machines accessible over the internet. It requires continuous auditing for the proper configuration of the services. It also includes workload monitoring and security and allows you to conduct a security configuration assessment across your IaaS environments. It provides auditing and monitoring of security settings and configurations, file access permissions, and compromised accounts.
While deploying a CASB solution into your business, ensure that your vendor provides a fully featured and customized solution for optimum coverage of the critical use cases in your organizations. The advanced solution should include service for malware detection, configuration auditing, and control over collaboration and data sharing on cloud services to protect your cloud platform.