Shield360 › Compare › AI security tools
Shield360 and AI security point tools
Prompt Security (now part of SentinelOne), Check Point Workforce AI Security (built on Lakera, which Check Point acquired), Harmonic Security and Nightfall AI are built to stop sensitive data reaching AI tools as employees use them, and several also protect MCP and coding tools. Shield360 overlaps with them on prompt protection. It differs in what it puts beside it: the AI spend, the audit evidence and the agent access record for the same use.
As of October 2026, from each vendor's own public pages. Products change, so check with the vendor.
01 · In short
Where each one fits
Prompt protection is the overlap.
Cost and evidence are the difference.
Choose a point tool when
The job is data loss prevention for AI and nothing else, across every browser and desktop app people use, and your security team wants the deepest prompt-level controls. Read the cells below carefully: on browser breadth, several of these tools state wider coverage than Shield360's extension.
Choose Shield360 when
The same buyer has to answer the auditor and the CFO too. Shield360 applies one policy in the browser, an AI proxy, six coding agents and an MCP gateway, and keeps the evidence and the cost of that AI use in the same record: control status for named frameworks, signed evidence packages, spend per person, seat and key.
Run both when
A point tool already handles prompts in the browser. Shield360 can leave its browser extension off and still bring the collector's shadow-AI and personal-account findings, coding-agent hooks, agent grants, AI spend and audit evidence.
02 · Side by side
From each vendor's own pages
Question by question.
Each vendor's cells come from its own product pages, documentation, blog and filings. Product names and tiers changed after the SentinelOne and Check Point acquisitions; we use the names on the vendors' pages today.
| Question | Prompt Security (SentinelOne) | Check Point Workforce AI Security (Lakera) | Harmonic Security | Nightfall AI | Shield360 |
|---|---|---|---|---|---|
| Where it runs | Browser extension and AI endpoint agent; MCP gateway; SDK for your own AI apps | Browser extension, optional desktop agent; Enterprise tier covers web, desktop, MCP and IDEs | Browser extension for all browsers and an MCP gateway, rolled out by device management | Browser plugin, endpoint agents, IDE hooks, MCP gateway | Browser extension in managed Chrome and Edge, collector on each computer, AI proxy, coding-agent hooks, MCP gateway |
| What happens to sensitive data in a prompt | ✓ Redacts inline before the prompt leaves the device; coaches; blocks unsanctioned tools | ✓ Detects and redacts, including files and images; interactive user guidance; blocks risky activity | ✓ Blocks, warns with context, or logs silently | ✓ Coaches, redacts only the problematic content, or blocks | ✓ Off, warn, mask or block per kind of data and per channel; prompts and file uploads checked on eleven AI chat sites and on AI sites you add |
| Shadow AI discovery | ✓ Usage across 15,000+ AI sites and services | ✓ Approved and shadow AI tools | ✓ Every AI tool in use; 1,000+ apps with prompt-level controls | ✓ AI apps, agents and MCP servers | ✓ Collector reports AI tools, sites and direct provider traffic per person and computer |
| Personal versus company AI accounts | Not stated | ✓ Tells corporate-account use from personal-account use | ✓ Identifies the account and plan behind each browser session | Not stated | ✓ Plan tier read from Claude Code, Codex, Cursor and Copilot sign-ins on each computer |
| Coding agents | ✓ GitHub Copilot, Cursor, Claude Code | ✓ GitHub Copilot, Cursor (Enterprise tier) | ✓ Claude Code, GitHub Copilot, Cursor, Codex | ✓ IDE hooks for Cursor, Claude Code and VS Code | ✓ Hooks in Claude Code, Codex, Cursor, Gemini CLI, Windsurf and GitHub Copilot CLI: warn or block sensitive data, secret-file reads and risky sequences; no masking |
| MCP and agents | ✓ MCP gateway; discovers MCP servers, sanctioned or not | ✓ MCP-connected tools; runtime controls on agentic actions | ✓ MCP gateway; MCP server tool controls | ✓ MCP gateway: discovers MCP servers, redacts secrets, blocks connections | ✓ MCP gateway: a token per agent, deny-by-default grants that can expire, denied calls recorded |
| Your own AI applications | ✓ AI Application Security blocks prompt injection and jailbreaks | ✓ AI Agent Security with AI Guardrails; AI Red Teaming | Not stated Prompt-injection detection listed as coming soon | Not stated | Partial Guard check API and SDK tracing; heuristic prompt-injection detection; templated, model-generated and multi-turn red-team passes on agent tests |
| AI spend | Not stated | Not stated | Not stated ROI and productivity insights by department | Not stated | ✓ Seats and per-token use per person, machine, tool, model and key; vendor bills beside the estimate |
| Compliance evidence for named frameworks | Not stated Pages refer to AI governance requirements generally | Not stated Audit trails and compliance reporting; no framework named | Not stated EU AI Act discussed; control mapping documents on request | Not stated | ✓ EU AI Act, ISO/IEC 42001, NIST AI RMF, OWASP Agentic control status; signed evidence packages |
| SIEM | Not stated Logs sit alongside SentinelOne telemetry | Not stated | ✓ Alert webhooks for SIEM and SOAR; OpenTelemetry export | ✓ Webhook to a SIEM; Splunk, Sumo Logic and LogRhythm named | ✓ OCSF to Splunk, Sentinel, Datadog, Elastic, S3, syslog over TLS or a signed webhook |
| Self-hosted | Not stated | Partial Self-hosted is offered for AI Guardrails; not stated for Workforce AI Security | Not stated EU hosting on request | Not stated | ✓ Docker Compose |
As of October 2026. Information about other vendors comes from their own public pages, listed under Sources, as read on 14 October 2026. Products change, and a feature a vendor's pages do not mention may still exist, so check with the vendor. Product and company names are trademarks of their respective owners and are used only to identify their products; no endorsement or affiliation is implied. If something here about your product is wrong, tell us and we will correct it.
03 · Together
Running both
Keep the prompt tool.
Add the record around it.
Pick one owner per prompt
If a point tool already checks prompts in the browser, leave Shield360's extension uninstalled there. Two tools inspecting the same text box means two dialogs for the same person.
Bring what the point tool does not state
The collector's shadow-AI and personal-account findings, AI spend by person, seat and key, and the signed evidence package do not depend on which tool checks the prompt.
Coding agents and MCP
Several of these tools also cover coding agents and MCP. Where they do, choose one enforcement point per agent; Shield360 can still record agent activity and cost there.
04 · Limits
What Shield360 does not do
What Shield360
does not do.
- The browser extension runs in managed Chrome and Edge only. It checks prompts and file uploads on eleven AI chat sites and on AI sites you add; on other listed AI sites it allows, warns or blocks the site itself. Each person must allow the sites you add once before their prompts are checked.
- It does not inspect desktop AI apps' traffic, and does not intercept TLS. AI use outside the extension, the proxy, a hook or the gateway is still observed and attributed, but not blocked.
- Coding-agent hooks warn or block; they cannot mask, and they do not yet enforce the approved-model list.
- No exhaustive red-teaming. Every attack starts from a test in your own suites, and generated and multi-turn attacks are only as strong as the evaluation model you configure. Prompt-injection detection is heuristic, with an optional model check.
- No per-person enforcement: a per-person setting narrows what is collected, not what is enforced.
05 · Sources
Read 14 October 2026
Sources.
Prompt Security (SentinelOne)
- SentinelOne — Prompt Security AI Usage Control
- SentinelOne — securing AI with Prompt Security
- SentinelOne — Prompt Security Agentic AI Security
- SentinelOne — Prompt Security AI Application Security
- Prompt Security blog — browser and endpoint sensors
- SentinelOne quarterly report (SEC) — acquisition of Prompt Security completed 5 September 2025
Check Point Workforce AI Security (Lakera)
Harmonic Security
Nightfall AI
Based on each vendor's public documentation as of October 2026; products change, so check with the vendor. Shield360 statements were checked against the product's documentation and source code as deployed in production on 15 October 2026.
Keep the tool that stops the prompt.
A call starts from the AI security tool you already run and shows the evidence, spend and agent record Shield360 would add.