How deeply can the Zscaler service scan recursively compressed files for malicious content?

Comprehensive and Detailed 100 to 150 words of Explanation From Zscaler Digital Transformation Administrator topics:

The Zscaler service can inspect files containing up to five layers of recursive compression, so D is correct. Recursive archives can conceal malicious executables or documents inside multiple nested containers. ZIA’s Malware Protection policy unpacks supported archives layer by layer and scans the extracted content, subject to applicable file-size, file-type, and inspection limitations. Restricting inspection to uncompressed files, two layers, or three layers would understate the documented capability. Administrators should still combine malware scanning with File Type Control, Cloud Sandbox, Advanced Threat Protection, and controls for encrypted or otherwise unscannable files because recursive-depth support alone does not guarantee that every payload can be inspected. Zscaler’s official Malware Protection policy documentation explicitly states that the service scans files with up to five layers of recursive compression.

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