What is a Cloud Access Security Broker (CASB)?

What is a Cloud Access Security Broker (CASB)?

CASBs have become the cornerstone of cloud-centric corporate cybersecurity

Cloud access security agents are enterprise software solutions that serve as intermediaries between users of cloud services and the cloud applications they use. CASBs monitor activity, enforce security policies, mitigate malware threats, and perform other vital functions.

“Cloud Access Security Brokers (CASBs) are cloud-based or local security policy enforcement points, located between cloud service consumers and cloud service providers to combine and enforce enterprise security policies as cloud-based resources are accessed. CASBs consolidate multiple types of security policy enforcement. Example security policies include authentication, single sign-on, authorization, credential mapping, device profiling, encryption, tokenization, logging, alerting, malware detection/prevention, etc. gartner saidwho first defined the category.

CASBs serve as the core technology of the Security Service Edge (SSE). They are also central to Secure Access Service Edge (SASE) solutions, which provide additional software-defined wide area network (SD-WAN) capabilities.

SASE and its associated tools, including CASB, have emerged as the fastest growing cloud opportunity in network securityaccording to Gartner, which predicts a market to exceed $6.8 billion in 2022 and growth of more than 41% year over year.

This uptick reflects the general and continuing trends of enterprise cloud data migration from isolated on-premises data centers to public and private cloud services. But it has accelerated as work culture shifted to a more hybrid model during the pandemic, according to Gartner.

In an era of “work from anywhere,” businesses need policy-based software that works from any location, on any potential device, to help mitigate risk, eliminate threats, and meet regulatory obligations. To help meet those needs, a CASB will align with other cloud services as part of this complete enterprise cloud security solution.

Cloud-Centric Corporate Security

“CASB functions as a policy enforcement hub, consolidating multiple types of security policy enforcement and applying them to everything your company uses in the cloud, regardless of the type of device trying to access it, including unmanaged smartphones, devices, etc. IoT or personal devices. laptops,” McAfee explained.

Because of its position between the user and the data and cloud services they are using, a CASB can mitigate the risk of exposure from unauthorized use of the company’s IT hardware and software, or the “Shadow IT” phenomenon, McAfee said. .

“While stopping threats resulting from Shadow IT was a primary use case, it wasn’t the only thing that drove the widespread adoption of CASB. During this time, many companies moved their data storage capabilities from on-premises data centers to the cloud. This made the CASB, which protected both the movement of data (by restricting things like access and sharing privileges) and the content of the data (through encryption), even more essential,” said McAfee.

A CASB will be combined with other core SSE/SASE services including Firewall as a Service (FWaaS), Secure Web Gateway (SWG), and Zero Touch Network Access (ZTNA). FWaaS provides next-generation firewall (NGFW) functionality through software. SWG enables users to access remote cloud services and data securely. And ZTNA restricts users to access only the network resources they need. To remove operational complexity and reduce potential security risk, cloud security vendors are increasingly emphasizing single-stack solutions that comprise these essential elements.

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