哪位知道国内有哪家在做CASB产品的吗？

CASB在Gartner的定义中如下：Cloud access security brokers (CASBs) are on-premises, or cloud-based security policy enforcement points, placed between cloud service consumers and cloud service providers to combine and interject enterprise security policies as the 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 and so on.可见，placed between cloud service consumers and cloud service providers 和多项安全功能以及代理的属性是主要特点。不知道国内有哪些厂商／团队在搞这个CASB的？