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Hushbridge vs Prompt Security

Prompt Security lets a security team govern AI use across a company. Hushbridge protects the details one person puts into a prompt.

Who it is for

Prompt Security

Broad platform: enterprise AI security

Prompt Security is part of SentinelOne. SentinelOne's annual report says it completed the acquisition on 5 September 2025. The product now sits inside the SentinelOne Singularity platform. It finds which AI tools staff use, sets policy for them, and blocks or redacts risky prompts. It fits security teams at larger companies that want one control point for employee AI use, code assistants and in-house AI apps.

Hushbridge

Local protection layer

Hushbridge works where people already use AI. On your device it swaps details for placeholders such as [PERSON_1] and shows you what the AI will get. After you review it, the placeholder version goes to the AI. Real values come back on your device. It fits professionals and small teams doing client work in ChatGPT or Claude, and developers who want that step in their own code.

At a glance

QuestionPrompt SecurityHushbridge
What it protectsCompany data across AI tools. SentinelOne says it can redact sensitive data and enforce policies across 15,000+ AI services. It also lists unsanctioned AI tools in use.Names, identifiers, addresses, secrets and anything on your own "always protect" list, in text you type or paste.
Where processing happensNot verified. AWS Marketplace lists hosted plans deployed on AWS and separate self-hosted plans.On your device.
Where original values are storedNot verified. SentinelOne says policies can redact or tokenize data. Where tokens map back to originals is not stated.In a swap table that stays on your device.
Restore in repliesNot verified. The pages we read describe redact, block, coach and alert. They do not describe restoring original values in answers.Yes. Real values return on your device in supported replies.
How you use itAdmins roll out a lightweight agent and browser extensions to staff. It also covers AI code assistants and apps a company builds, through an API.A browser extension for ChatGPT, Claude, Gemini, Copilot and Perplexity, a web workspace, or the SDK and local proxy in your own code.
DeploymentPart of the SentinelOne Singularity platform. Hosted or self-hosted options are listed for employees, code assistants and homegrown apps.Extension version 0.1.1 installs manually in Chrome with "Load unpacked". Workspace and billing run on tightlipai.com during the move to the new name.
PricingNot published. AWS Marketplace lists custom pricing per user on contract.USD 0.05 per credit. Top-ups from USD 100. USD 20 free credit on sign-up (to be reconfirmed before launch). One credit covers each started block of 8,000 tokens.

Prompt Security statements come from SentinelOne pages, its AWS Marketplace listing and one independent review. We did not test the product.

Choose Prompt Security when

  • You run security for a large company and need to see every AI tool staff use, approved or not.
  • You want central policy that admins push to every browser and device.
  • You also need to cover AI code assistants and AI apps your company builds.
  • You already run SentinelOne and want AI controls in the same platform.

Choose Hushbridge when

  • You are one professional or a small team, without a security department.
  • You want the AI answer to come back with the real names in place.
  • You want to check the exact placeholder text before you send it.
  • You prefer paying per use over a contract quote.

Limits of each

Prompt Security

  • It is sold to companies through SentinelOne. No self-serve plan was listed.
  • Prices are quoted per contract.
  • No page we read says redacted values are restored in the answer.
  • Where prompts are inspected is not stated on the pages we checked.

Hushbridge

  • Detection can miss a name with no context cues. The rest of the text can still point to a person.
  • The extension does not scan attachments.
  • A chat site's page can read text while you type it.
  • It has no admin console for company-wide AI policy.
  • You still need to review the text before you send it.

Sources

  1. Secure AI Usage and Prompts | SentinelOne. https://www.sentinelone.com/platform/securing-ai-prompt/. Checked 2026-10-15.
  2. A New Chapter for AI and Cybersecurity: SentinelOne Acquires Prompt Security | SentinelOne blog (updated 3 Sep 2025). https://www.sentinelone.com/blog/a-new-chapter-for-ai-and-cybersecurity-sentinelone-acquires-prompt-security/. Checked 2026-10-15.
  3. Prompt Security from SentinelOne. https://prompt.security/. Checked 2026-10-15.
  4. SentinelOne, Inc. Form 10-K for fiscal 2026 (acquisition note). https://www.sec.gov/Archives/edgar/data/1583708/000158370826000020/s-20260131.htm. Checked 2026-10-15.
  5. Prompt Security: AI Security Platform | AWS Marketplace. https://aws.amazon.com/marketplace/pp/prodview-lzvx5ody7qffw. Checked 2026-10-15.
  6. Prompt Security 2026: GenAI Firewall by SentinelOne | AppSec Santa (updated 7 Oct 2026). https://appsecsanta.com/prompt-security. Checked 2026-10-15.
  7. Pricing | Tightlip (Hushbridge billing during the migration). https://tightlipai.com/pricing. Checked 2026-10-15.

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