HEAD-TO-HEAD · FACTS ONLY
Sun vs Zscaler: AI endpoint control facts side by side
Short answer
Sun describes 0 of the four product control types on the pages we read and Zscaler describes 1; they differ on on-device control and network or SSE proxy. On decisions, Sun decides on a tool call before it runs and Zscaler does not describe tool-call decisions on the pages we read. We do not score either; the right choice depends on the AI tools people use, your devices, your current stack and whether you block or guide.
By The Device Desk · Endpoint AI Finder · Published 2026-10-11
Desk research from public vendor pages read on 27 September and 11 October 2026. Profiles follow our published method; we did not run the products.
Vendor pages read September and October 2026 · updated 2026-10-13
Where do their controls sit?
- Filled or hatched marker: Sun
- Dashed teal ring: Zscaler, described
- DEV Filled marker: described on the product pages we read
- DEV Hatched marker: partly described (another component, a narrower scope, or method not detailed)
- DEV Dashed marker: not in our sources (it may exist; we did not find it)
What are the facts, side by side?
| Fact | Sun | Zscaler |
|---|---|---|
| Owner | None | None |
| Positioning | AI agent security that says it sits in the path of every AI agent across workstations, cloud and SaaS, with three capabilities: discovery, posture management that learns each agent's purpose, and runtime checks of every tool call, connection and resource draw against that purpose before it executes. | Zscaler's controls for employee use of generative AI: prompt-level visibility, allow or block by app, DLP blocking across GenAI apps, browser isolation that disables cut, paste and download, and data security for Microsoft Copilot. |
| How it reaches devices | Not described; the site says you can get started in 5 minutes. Source: Sun Security homepage · Read 13 Oct 2026 | Delivered with Zscaler's cloud security service in the network path; endpoint agents are not described on the page we read. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026 |
| On-device controlDiffers | Partly describedCovers agents on workstations; the on-device method is not described. Source: Sun Security homepage · Read 13 Oct 2026 | Not in our sourcesNot described on the pages we read. |
| Browser extension | Not in our sourcesNot described on the pages we read. | Not in our sourcesNot described on the pages we read. |
| Network or SSE proxyDiffers | Not in our sourcesNot described on the pages we read. | DescribedSee all input prompts users send to apps, allow or block apps, block sensitive data with DLP across GenAI, and isolate the browser to disable cut, paste and download. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026 |
| AI or MCP gateway | Not in our sourcesNot described on the pages we read. | Not in our sourcesNot described on the pages we read. |
| Names the coding agents it coversDiffers | PartlyNames Cursor and Claude Cowork; Claude Code, Codex and GitHub Copilot are not named. Source: Sun Security homepage · Read 13 Oct 2026 | Not in our sources |
| Decides on a tool call before it runsDiffers | MatchesEvery tool call, connection and resource draw is checked against the agent's purpose before it executes. Source: Sun Security homepage · Read 13 Oct 2026 | Not in our sources |
| Controls what goes into browser AIDiffers | Not in our sources | MatchesPrompt-level visibility, DLP blocking across GenAI apps, and browser isolation that disables cut, paste and download. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026 |
| Rolls out through EDR or device management you run | Not in our sources | Not in our sources |
| Can warn or ask instead of only blocking | Not in our sources | Not in our sources |
| Can block an agent, tool or actionDiffers | PartlyIts demo shows a stopped action. Source: Sun Security homepage · Read 13 Oct 2026 | MatchesAllow or block GenAI apps, and block sensitive data with DLP. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026 |
| Has a watch-only or simulation mode | Not in our sources | Not in our sources |
| Records who or what took each actionDiffers | PartlyIts demo shows an action log. Source: Sun Security homepage · Read 13 Oct 2026 | Not in our sources |
| Also covers SaaS, cloud or homegrown AIDiffers | MatchesNames Copilot Studio and AWS Bedrock agents. Source: Sun Security homepage · Read 13 Oct 2026 | PartlyData security for Microsoft Copilot, including misconfigurations. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026 |
| Has a public price or tiers (vendor site or marketplace) | Not in our sources | Not in our sources |
| Built into | None | None |
| Works with | None in our sources | None in our sources |
| Price | Not published (demo request). Source: Sun Security homepage · Read 13 Oct 2026 | Not published (demo request). Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026 |
Where do they differ?
- On-device control: Sun partly describes it; Zscaler is not in our sources.
- Network or SSE proxy: Sun is not in our sources; Zscaler describes it.
- Names the coding agents it covers: Sun partly matches; Zscaler is not in our sources.
- Decides on a tool call before it runs: Sun matches; Zscaler is not in our sources.
- Controls what goes into browser AI: Sun is not in our sources; Zscaler matches.
- Can block an agent, tool or action: Sun partly matches; Zscaler matches.
- Records who or what took each action: Sun partly matches; Zscaler is not in our sources.
- Also covers SaaS, cloud or homegrown AI: Sun matches; Zscaler partly matches.
Choose Sun if
- You want each agent action checked against that agent's purpose
Choose Zscaler if
- You already route traffic through Zscaler and want GenAI controls there
- Your main risk is sensitive data pasted or uploaded into GenAI web apps
Which limits should you check?
Sun
- Sun's site is a single marketing page, so most details are not described.
- How it reaches devices is not described, and no price is published.
Zscaler
- Coding agents, MCP servers and local agent actions are not described on the page we read.
- Warn or ask responses are not described, and no pricing is published.