Island secures work by putting it inside its own enterprise browser, or the Island Extension in another browser, and adds AI governance on top. AILeakShield is AI-only: it adds AI discovery, control and prompt protection to the browsers staff already use, and governs AI apps connected to Microsoft 365.
What Island is: Island Enterprise Browser and Island Extension, with Island AI protection, MCP Gateway and Island Desktop.
Yes means documented. Partial means limited, an add-on, a separate product or preview. Not documented means we could not find it in the vendor's public documentation; it does not mean the vendor has tested and failed it.
| Capability | AILeakShield | Island |
|---|---|---|
| Discover | ||
| AI websites used in the browser | YesBrowser extension for Chrome, Edge and Firefox with a risk-ranked AI catalog. | YesTracks AI apps and LLMs in use, separating corporate and personal tenants. |
| Desktop AI apps and coding tools | YesFirewall and DNS log import, plus RMM software inventory for MSPs (NinjaOne; ConnectWise, Datto, Kaseya and N-able in beta). | PartialIsland Desktop adds AI visibility on endpoints; supported apps not published. |
| AI apps connected to Microsoft 365 (OAuth) | YesRead-only Microsoft 365 connection lists AI apps users or admins have consented to. | Not documentedMicrosoft 365 OAuth app discovery not found in public materials. |
| AI agents | YesAI agent tools on desktops and AI agents connected to Microsoft 365, such as meeting bots. | YesMCP Gateway and inventory of MCP servers, coding agents and non-human identities. |
| Control | ||
| Block or restrict unapproved AI tools | YesIn the browser, through a firewall blocklist feed (Palo Alto EDL, FortiGate, pfBlockerNG, RPZ) and in Microsoft 365 consent. | YesDefines which AI tools, models and tenants each user can use; can redirect to a sanctioned tool. |
| Revoke AI app access in Microsoft 365 | YesAudited revoke of an AI app's Microsoft 365 grants. | Not documentedMicrosoft 365 OAuth grant revocation not found in public materials. |
| Protect | ||
| Inspect prompts for sensitive data | YesTyped and pasted prompt text, inspected before it is sent. | YesReal-time prompt sanitization of PII, payment data and customer data. |
| Inspect files uploaded to AI | YesFiles attached to AI prompts are inspected before send. | PartialDetects PII in files; upload-specific controls described only briefly. |
| Warn and require a typed justification | YesCoached warning; the reason is recorded in the audit log. | Not documentedIn-browser notifications; a typed justification flow was not found. |
| Mask or redact sensitive values | PartialMasking is available in the AILeakShield secure AI workspace; on third-party AI sites the extension warns or blocks. | YesMasks or redacts sensitive values in prompts. |
| Custom sensitive terms | YesCustomer-defined terms such as project names and client lists. | PartialCan apply Microsoft Purview classifiers through an integration. |
| Comply | ||
| Built-in NIST AI RMF assessment | YesIncluded in every subscription. | Not documentedNo NIST AI RMF assessment found. |
| AI policy library with staff acknowledgment | YesIndustry policy library with tracked staff acknowledgment. | Not documentedNo AI policy library with staff acknowledgment found. |
| Deploy and buy | ||
| No proxy, SSE or new browser required | Not requiredBrowser extension in the browsers staff already use, plus log import and a Microsoft 365 connection. | Not requiredNo proxy; users work in Island Enterprise Browser or with the Island Extension. |
| Multi-tenant console for MSPs | YesPartner console with per-client isolation and policy templates. | PartialSMB offer for MSPs on Pax8 since June 2026; multi-tenant console not described. |
Island: Island needs users to work in the Island Enterprise Browser or with the Island Extension in another browser; Island Desktop and Island Network add endpoint and network coverage. An SMB offer for MSPs is available on Pax8. Prices are not published.
AILeakShield: A browser extension for Chrome, Edge and Firefox, installed silently through Google Admin, Microsoft Intune, Group Policy or Jamf, plus firewall and DNS log import and an optional read-only Microsoft 365 connection. No proxy, no TLS inspection and no new browser. Everything is in one subscription, sold through IT providers and distribution including TD SYNNEX, with no seat minimum. Most organizations start in monitor mode.
More comparisons: All comparisons · AILeakShield vs Microsoft Purview · AILeakShield vs Netskope · AILeakShield vs Zscaler · AILeakShield vs Palo Alto Networks · AILeakShield vs Cisco · AILeakShield vs Check Point · AILeakShield vs Akamai (LayerX) · AILeakShield vs Harmonic · AILeakShield vs Prompt Security · AILeakShield vs Nightfall · AILeakShield vs Cyberhaven
For AI governance, yes. Island is an enterprise browser that secures all work in the browser. AILeakShield covers only AI and works inside Chrome, Edge and Firefox as they are.
No. AILeakShield is an extension for Chrome, Edge and Firefox and can be installed silently through Google Admin, Intune, Group Policy or Jamf.
Yes. It finds desktop AI apps and coding tools through log import or an MSP's RMM, and AI apps connected to Microsoft 365 through a read-only connection.
From Island's public documentation and product pages, last checked October 21, 2026, with sources linked on this page. Where we could not find a capability documented, we say so rather than claiming it is missing. Vendors can contact us with corrections.
AILeakShield discovers all the AI in your environment, blocks the AI tools you have not approved, and keeps sensitive data out of the prompts sent to the ones you have.
