Nightfall AI

What is Nightfall AI?

Nightfall AI is a data security platform that controls how people, AI agents, and applications move sensitive information across endpoints, SaaS tools, and email. It is relevant to security teams managing employee AI use, autonomous agent activity, and data exfiltration prevention. Access requires scheduling a live demo with the vendor.

What are the features of Nightfall AI?

• Model Context Protocol gateway

  Approves specified MCP servers, blocks others by default, and enforces policy on every tool call made by AI agents.
• Session inspection hooks

  Inspects and blocks prompts, tool calls, and responses during live sessions across supported Claude interfaces.
• Prompt injection interception

  Detects and blocks malicious instructions hidden in prompts, files, and tool responses before they reach the model.
• Shadow AI prevention

  Stops corporate data from leaving through personal ChatGPT accounts, unmanaged copilots, and browser-based AI tools.
• Data discovery and classification

  Scans connected SaaS applications to find sensitive data already exposed before it becomes an incident.
• Autonomous investigation tool (Nyx)

  Provides pre-trained detectors for secrets, source code, and customer PII, recommending policy tuning without manual rule-writing.

What are the use cases of Nightfall AI?

• Blocking employees from pasting personally identifiable information or customer data into unapproved generative AI sites like personal ChatGPT.
• Preventing an autonomous AI agent from pulling Salesforce records, summarizing them, and sending the output to an unauthorized destination.
• Stopping data exfiltration across local egress, clipboard, USB, and unmanaged web channels directly on the endpoint.