CASBs have proven to be highly valuable to enterprises on a variety of fronts. At their core, a CASB is able to extend security policy to an enterprise’s cloud applications in much the same way a traditional firewall would protect on-premise applications. What we see is that a CASB can lose control over data after it has been accessed. Users can still copy the content, store it in insecure personal drives, share it with other parties, or have it compromised by malware or attackers. While a CASB can help illuminate an application blind spot, it does not ensure that data itself remains safe.
This is where Secure Collaboration compliments a CASB product.
Secure Collaboration protects unstructured data, and a CASB allows you to fulfill the gaps in structured data. From an unstructured data perspective, when Secure Collaboration encrypts a file in Box, it can break some of the functionality of Box, namely search. You can use a CASB to protect the file as it’s sent to Box, and gives the ability to use that file while it’s unencrypted, so you have the benefits under their infrastructure. However, when that file starts to egress and leave the company, that’s when the CASB would call on the Secure Collaboration API to extend their protection, encrypt the files, and maintain that ownership of the file, once it leaves the protection of the CASB sphere.