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Products by Industry

One firewall · every compliance framework · one deployment

TechnologySOC 2

Engineers pasting API keys & source into Copilot.

HealthcareHIPAA

Clinicians pasting PHI into AI for documentation.

DefenseCMMC L2

DoD contractors leaking CUI into proposal tools.

Legal & FinancePCI

Privileged client data shared with AI assistants.

Five EyesAUKUS

Allied suppliers navigating DISP & Essential 8.

GovernmentSoon

FedRAMP / FISMA — agency AI governance.

SOC 2 · HIPAA · CMMC L2 · 16 engines · <10msAll capabilities
Features
Core Capabilities

Inside the HoundShield firewall engine

AI Prompt Interception

Every LLM request inspected before it leaves the network.

16 Detection Engines

CUI, PII, IP, PHI, secrets, CAGE codes, clearances.

Immutable Audit Trail

SHA-256 tamper-evident logs. C3PAO-ready.

Live Threat Dashboard

Real-time blocked prompts, risk & posture.

Pricing
Pricing

All frameworks included in every plan

Free

Up to 1,000 prompts/mo

$0/mo
Pro

CMMC suite + AI gateway

$199/mo
Growth

PDF reports + C3PAO coord

$499/mo
Enterprise

On-prem · air-gapped

$999/mo
Compare all plans
Partners
Partner Program

Build & grow with HoundShield

RPO / MSP Referral

Co-brand the $499 report · keep the margin.

MSP / Agency

40% per report · 20% recurring · white-label.

Integrations

Drop-in proxy for ChatGPT, Copilot, Claude.

Docs
Documentation

Live in under 5 minutes · no code changes

Quickstart

One URL change → full compliance.

API Reference

Gateway, classifier & audit endpoints.

FAQ

Searchable answers — pricing, HIPAA, CUI.

16 engines · <10ms scan
Sign inStart free

CMMC & AI Security Blog

Stay Ahead of CMMC.
Don't Lose Your Contracts.

Expert guides on CMMC Level 2, protecting CUI from AI tools, HIPAA compliance, and everything a defense contractor's IT security manager needs to know in 2026.

Featured

CMMC Compliance10 min read

GCC High Copilot vs Third-Party AI Proxy: Which Is Cheaper for CMMC? (2026)

Microsoft's answer to CMMC-safe AI is Copilot inside GCC High — 'free' with your E5/G5 licensing, after a $149K–$200K/yr tenant migration. For contractors under 200 employees, that math rarely closes. Here is the honest cost comparison, including when GCC High genuinely wins.

HoundShield Security TeamRead article →

All Articles

AI Security10 min read

AI and Attorney-Client Privilege: What the 2024–2025 Bar Opinions Mean for Your Firm

No bar has banned generative AI — but every major opinion holds lawyers to their existing duties, and opposing counsel is already probing whether AI use waived privilege. What the 2024–2025 opinions require, where the waiver risk sits, and the architecture that ends the argument.

HoundShield Security TeamJuly 11, 2026
CMMC Compliance11 min read

Did an Employee Paste CUI Into ChatGPT? The CMMC Incident-Response Playbook

Someone on your team pasted contract data into ChatGPT. You may be inside DFARS 7012's 72-hour reporting window. This playbook walks the first hour, day, and week — containment, scoping, DIBNet reporting, evidence preservation, and the corrective action assessors respect.

HoundShield Security TeamJuly 10, 2026
CMMC Compliance12 min read

NIST 800-171 Controls That Map to AI Prompt Monitoring (Full Mapping)

Which of the 110 NIST 800-171 Rev 2 requirements does AI prompt monitoring actually satisfy? This is the full control-by-control mapping — 3.1.3 flow control, 3.13.1 boundary protection, 3.3.1 audit records, 3.6.x incident handling — with the evidence a C3PAO assessor accepts for each.

HoundShield Security TeamJuly 10, 2026
How-To8 min read

CMMC AI Use Policy Template [Free, Copy-Paste, Control-Mapped]

Every contractor needs a written AI use policy before a C3PAO assessment — and most online templates are generic IT policies with 'AI' pasted in. This one is built for CUI environments: scope, prohibitions, enforcement, logging, and incident response, each mapped to its NIST 800-171 requirement.

HoundShield Security TeamJuly 10, 2026
CMMC Compliance9 min read

The C3PAO AI-Usage Checklist: 12 Questions Your Assessor Will Ask in 2026

AI usage is the newest line of questioning in CMMC Level 2 assessments: unmonitored ChatGPT prompts are an unmonitored egress path, and assessors know it. The 12 questions to expect, the evidence that answers each, and how to walk in with answers instead of a deficiency.

HoundShield Security TeamJuly 10, 2026
CMMC Compliance8 min read

AI Tools That Violate CMMC: What Defense Contractors Need to Know in 2026

Your employees are using AI. Some of them are pasting contract details, technical specs, and project names into ChatGPT. Every one of those sessions is a potential CMMC violation — and your auditor will ask about it.

HoundShield Security TeamMay 6, 2026
CMMC Compliance7 min read

HoundShield vs Nightfall: The CMMC-Compliant AI Firewall Comparison

If you're evaluating DLP solutions for CMMC compliance, you need to ask one question first: does the vendor's product send your data to their cloud? If yes, it's non-compliant for CUI. Here's how the major options stack up.

HoundShield Security TeamMay 4, 2026
AI Security9 min read

How to Protect CUI When Using ChatGPT: A Defense Contractor's Complete Guide

You can't just ban ChatGPT. Employees will use it anyway — on personal devices, at home, through browser extensions. The only solution that actually works is a local AI proxy that catches CUI before it leaves your network.

HoundShield Security TeamMay 1, 2026

Ready to Pass Your CMMC Assessment?

One URL change. Sub-10ms AI scanning. PDF evidence your C3PAO can review on-site. Defense contractors use HoundShield to close the AI compliance gap before their audit.

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HoundShieldHoundShield

Local-only AI compliance firewall for CMMC Level 2, HIPAA & SOC 2. Prompt content never leaves your network.

CMMC LVL 2HIPAASOC 2NIST 800-171DFARS 7012
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