Which Zscaler cloud app categories have granular controls?

How picky can we be with Zscaler cloud app control?

Which Zscaler cloud app categories have granular controls?
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This is part of an on-going series in cybersecurity foundations. Check the cyber 101 article tag index from time to time for more content.

The Cloud App Control component of Zscaler is a very powerful and convenient feature that simplifies protection. These days, applications have a TON of various underlying addresses, third-party services, and sub-components which would be otherwise difficult to filter on URL alone. Cloud App Control leans on Zscaler to maintain proper scrutiny on this data. The result is (typically) a more robust and complete policy enforcement model.

All that being said, it's worth noting that not all Cloud App Categories are the same. Zscaler has some Cloud App categories with a simple "Allow" or "Block" stance (meaning that it's an all-or-nothing action; the user is either permitted to use the app/service or not). Zscaler has other Cloud App categories with more granular permissions. For example, maybe admins want the user to read messages from gmail but not upload attachments.

Here's a break-down of the app categories and their high-level capabilities (courtesy of Zscaler documentation):

  • Cloud App Categories with Allow or Block Options (all-or-nothing)
    • Consumer
    • Custom Applications
    • DNS Over HTTPS Services
    • Finance
    • Health Care
    • Hosting Providers
    • Human Resources
    • IT Services
    • Legal
    • Productivity & CRM Tools
    • Sales & Marketing
  • Cloud App Categories with options for granular controls (selective partial access)
    • AI & ML Applications
    • Collaboration & Online Meetings
    • File Sharing
    • Instant Messaging
    • Social Networking
    • Streaming Media
    • System & Development
    • Webmail

What happens if a single policy involves multiple categories? In this scenario, only actions common to all categories would be available.

For more information on this topic, check out Zscaler documentation here:

https://help.zscaler.com/zia/understanding-cloud-app-categories