Nightfall AI Triples New ARR in Record Q3 as AI Agents Reshape Data Security
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AI Security
Agents, MCP & Employee AI Use

Secure AI agents without slowing down innovation.

Govern autonomous agents, every MCP tool call, and how employees use AI. See it, stop it in real time, and keep developers moving.

17,950+
MCP Servers Tracked
95%
Fewer False Positives
6 Claude surfaces
Web, Desktop, Mobile, Cowork, Claude Code, Claude in Slack
<1 Hour
Deploy Via MDM
The Problem

AI didn't add one new
risk. It added three.

For years, data security assumed a person was moving the data - deliberately, through a known channel. That assumption now breaks in three different directions.

Risk 01

Agents act on their own

Cursor pulls from a codebase, Claude queries a database, an MCP-connected tool reads a file and sends the result somewhere else — all before a security team has a chance to ask what happened.

Risk 02

Employees prompt agents
into the risky thing

A person doesn't need to exfiltrate data themselves when they can ask an approved AI tool to pull it, summarize it, and hand it off in a form that looks nothing like the original file.

Risk 03

Employees go around AI
governance entirely

Personal ChatGPT accounts, browser plugins, unmanaged copilots. Shadow AI moves corporate data outside any policy that was ever written.

Customer quote

"Observability is an epic fail. We only discover MCPs through daily Slack self-confessions."

Head of Security, Legal Tech Company
The Solution

One control plane for agents and the people using them.

Discover every agent, inspect every tool call, enforce policy at the MCP Gateway, and govern employee AI use in the browser. Deploy in hours, not months - no policy tuning required.

AI Security

Secure AI agents and employee AI use, MCP servers, tool calls, and prompts included.

  • AI agent and MCP governance
  • Prompt injection interception
  • Shadow AI prevention

Data Security

Secure AI agents and employee AI use, MCP servers, tool calls, and prompts included.

  • Exfiltration prevention with lineage
  • Discovery and classification
  • Real-time detection and response

Security Operations

Turn data-security events into actionable investigations, with the full story attached.

  • Nyx, the autonomous DLP analyst
  • Insider risk investigations
  • Automated remediation workflows
01

Govern how employees use AI

Whether an employee prompts an approved copilot or pastes into a personal ChatGPT, Nightfall sees the movement in the browser and on the endpoint - and coaches, redacts, or blocks in the moment.
  • Shadow AI prevention - stop corporate data leaving through personal ChatGPT, unmanaged copilots, and browser AI tools
  • Prompt and upload inspection — PII, PHI, PCI, secrets, and source code classified before they reach the model
  • Real-time coaching - "Use ChatGPT Enterprise for corporate data," delivered in the browser, Slack, or Teams
  • Enterprise-only enforcement — allow ChatGPT Enterprise to reach corporate Drive, block personal accounts by policy, not memo
02

Know every AI agent in your organization

Automatically discover and catalog all MCP servers across Claude Desktop, Cursor, VS Code, and custom integrations. Map who uses which agents and what systems they reach.
  • Real-time configuration scanning - new MCPs detected as they are installed
  • User and device attribution for full accountability
  • Shadow AI detection - flag unapproved tools instantly
  • Audit-ready reports for compliance teams
03

Detect risky agent
behavior before data leaves

Monitor every MCP tool call in real time. AI-powered analysis finds sensitive data in prompts, uploads, API calls, and responses - 95% fewer false positives.
  • Content inspection at the protocol level - intercept before the model processes it
  • Alert when an MCP server is added, changed, or removed on any endpoint.
  • Risk scoring on every user, surfaced by the Insider Risk Agents.
  • Semantic analysis - "our unreleased financials" is sensitive without a single PII pattern
04

Enforce inside Claude itself with Inference Hooks

Nightfall for Claude Inference Hooks inspects every prompt, tool call and tool response before Claude reads it, and blocks what policy forbids. One integration covers Claude on web, desktop and mobile, Claude Cowork, Claude Code and Claude in Slack, regardless of device or whether the employee is on a managed endpoint. No endpoint agent required.
  • Prompt inspection: PII, PHI, PCI, secrets and source code blocked before they reach the model
  • Tool call and tool response inspection: sensitive data stopped in flight between Claude and the systems it touches
  • Model response monitoring: sensitive content in Claude's output flagged and logged
  • Works alongside the Claude Compliance API: chats and files across your Claude Enterprise org scanned, policy incidents raised, users notified
05

MCP Gateway: stop risky calls before data leaves

MCP Gateway sits in front of every tool call. Destructive actions - deletes, writes, database drops - are disarmed before they execute. Sensitive data returned by a tool call is blocked in flight, before the agent ever sees it. Sends to a destination outside policy are blocked, with full lineage retained for investigation.
  • Curated MCP registry - approve the 50 that matter, block 17,950+ by default
  • Role-based access - engineering gets code tools, sales gets CRM, finance gets read-only
  • Data-classification enforcement — block PHI, PII, PCI, and IP in prompts to non-compliant services
  • Exception workflows - request access with justification, on-demand SecOps approval
How It Works

How Nightfall secures agentic workflows across three surfaces

Inside the model call

Inference Hooks inspect prompts, tool calls and responses across every Claude surface.

At the MCP Gateway

Every tool call proxied, destructive tools pruned, credentials brokered.

On the endpoint

IDE hooks for Cursor, Claude Code and VS Code; shell commands and shell output; browser paste and upload; CLI exfil paths.

01

Admins configure allowed servers

Browse discovered MCP servers, review their tools, and approve what's safe for the organization.

02

Developers connect once

A single line in their MCP configuration points to the gateway. Authentication via SSO - no repeated logins.

03

The gateway proxies every request

Policies are enforced, requests are logged, and approved calls are forwarded to the real MCP servers.

04

Full visibility & control

Real-time audit logs, instant revocation, and DLP scanning for sensitive data in transit.

Why Nightfall

Built for the agentic era - not retrofitted from legacy DLP.

Legacy DLP is regex-based, needs 6-8 months of tuning, and is blind to Cursor and Claude Desktop. Gateway-only tools see hosted MCPs and nothing else. Nightfall covers MCP, SaaS, endpoint, and GenAI in one platform.

First-mover advantage

Built for MCP and agentic workflows from the start, not retrofitted from legacy DLP.

AI-native detection

Pre-trained LLM and computer-vision models understand context: "our Q4 roadmap" is sensitive even without a PII pattern. No tuning cycle.

Deploy in days, not months

Inference hooks for Claude, IDE hooks for Cursor and VS Code, browser and endpoint coverage for ChatGPT. No appliances. Audit-ready visibility in your first week.

One platform

Don't buy separate tools for MCP security, SaaS DLP, endpoint DLP, and GenAI governance. One consistent experience across your environment.

CapabilityTraditional DLP + IRMGateway-Only SolutionsNightfall AI
MCP Discovery
No visibility
Limited to hosted MCPs
Full endpoint + cloud discovery
Desktop App Coverage
Blind to Cursor, Claude Desktop
No endpoint agent
Native desktop app monitoring
AI-Native Detection
Regex-based, 50% accuracy
Basic keyword filtering
LLM-powered, 95% fewer false positives
Policy Tuning Required
6-8 months tuning
Manual rule creation
Zero tuning - pre-trained
Deployment Time
12-18 months
4-6 weeks
Production in 2 weeks
False Positive Rate
80-95% alerts are noise
40-60% false positives
95% fewer false positive
Developer Experience
Heavy agents, constant friction
Gateway latency issues
Lightweight, millisecond overhead
Unified Platform
Buy 3-4 separate tools
MCP-only, no SaaS DLP
MCP + SaaS + Endpoint + GenAI
Claude surface coverage
None
Hosted MCP only
Web, Desktop, Mobile, Cowork, Claude Code, Claude in Slack
Enforcement inside the model call
Not supported
Not supported
Inference Hooks: block prompts, tool calls, tool responses
Full support
Limited / partial support
Not supported

See what your data did last night. And right now.

See what your agents did last night, and what they are doing right now.