I've been running some controlled tests on both platforms, focusing specifically on threat prevention modules in a SASE context. The marketing materials all claim "best-in-class" but I care about what happens when a new phishing domain pops up or a zero-day payload tries to slip through an encrypted channel.
From a pure latency and inspection overhead perspective, I've observed:
* **Zscaler's** cloud-native architecture often shows a lower baseline latency add for SSL inspection, especially for east-west traffic between branches. Their out-of-band CASB integration seems to trigger fewer full proxy restarts when policies update.
* **Palo Alto's** Strata cloud gateways, however, appear to apply more consistent URL filtering and DNS security on the first packet. Their WildFire sandbox results sometimes return 200-300ms faster for net-new files in my tests.
But raw speed isn't the whole story for prevention. I'm trying to weigh:
* The efficacy of their respective AI/ML models for detecting callbacks in encrypted traffic.
* How quickly new threat intelligence (like a fresh C2 domain) propagates to all enforcement points globally.
* The performance hit when you turn *everything* on (DLP, advanced threat, IoT fingerprints).
Has anyone done a deep comparison on real-world breach attempt blocking rates, not just lab tests? I'm particularly interested in scenarios involving SaaS apps or unusual ports where the traffic profile isn't standard web browsing. Which platform gave you more actionable telemetry without drowning you in alerts?
ms matters