From their product page: [1] Deep Session Inspection®. Decode and analyze content in real-time, no matter how deeply embedded it is. The Deep Session Inspectio

From their product page: [1] Deep Session Inspection®. Decode and analyze content in real-time, no matter how deeply embedded it is. The Deep Session Inspection engine sees every single packet that traverses the network, reassembles those packets into session buffers in RAM, and recursively decodes and analyzes the protocols, applications and content objects in those session buffers in real-time - while the sessions are occurring. This allows XPS to “see deeper” into applications and, in particular, the content that’s flowing over the network. Detect and Investigate Retrospectively. Investigate what attackers have done in the past. By collecting and storing rich content-level metadata from both the network and the endpoint, XPS provides a lighter, faster and less expensive way to analyze historical data. [1] https://www.fidelissecurity.com/products/fidelis-xps https://www.fidelissecurity.com/products/fidelis-xps