At the highest level, implementing a CASB is a matter of assessing your needs, matching them to the right product, setting it up in the way that best suits your systems, and performing ongoing monitoring and audits. You could look at it in five steps:
Assess your environment and make a plan. Understand the cloud services and apps in use, attendant risks, and your security policy and compliance needs.
Select the right CASB solution for your needs. Just as important as finding the right product, find the right vendor—choose a partner you know you can trust.
Integrate the CASB with your cloud services and user directories. Use SSO to enable secure user access and seamless authentication.
Configure access, data sharing, DLP, and security policies. Depending on your industry, you may need to take special care with your policies around encryption.
Enable real-time monitoring and threat detection. You’ll also need to regularly review and update your policies as your organization’s needs evolve.
2021年、Gartnerはさらに掘り下げ、SASEのセキュリティ機能のみを指すセキュリティ サービス エッジ(SSE)を打ち出しました。これは、複雑で統一されていないセキュリティ スタックを合理化するための取り組みが世界規模で進んでいることを反映しており、企業の30%が2024年までにSWG、CASB、ZTNA、Firewall as a Service (FWaaS)機能を同一のベンダーで採用するとGartnerは予測しています。
A CASB acts as a checkpoint between your network and cloud services, monitoring and managing data traffic to and from cloud apps, providing visibility into user activities, enforcing security policies, detecting threats, and protecting sensitive data. CASBs help maintain control, compliance, and data protection for your network cloud environment.
How Do You Choose a CASB?
To find the right CASB for your enterprise, start by evaluating what you need to protect, at what scale, and which cloud services you use. The right CASB will offer robust threat detection, granular access controls, strong encryption, and integration with your existing security infrastructure and cloud environment. Finally, you’ll want to find the right technology partner—one you can trust to work with you to make your chosen CASB solution the best fit for your needs.
CASB and DLP
Many CASBs incorporate DLP features to prevent sensitive data from moving from your network to the cloud (or the reverse) without authorization. DLP functions monitor data traffic, block or encrypt sensitive data, and send alerts on potential breaches or leaks. Together, CASB and DLP help control the movement of data and protect sensitive information traveling between on-premises networks and cloud services.
Is a CASB All I Need for Cloud Security?
A CASB is an essential piece of strong cloud security, but it doesn't stand alone. Effective cloud security combines CASB with robust identity and access management, encryption, network security, regular security auditing, and more. CASB focuses on securing data flows between an organization's network and the cloud, but comprehensive cloud security covers broader range of potential threats across all aspects of cloud infrastructure and usage.