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About Nightfall
What is Nightfall?
Nightfall is an AI-powered Data Loss Prevention (DLP) and data security platform. It gives organizations real-time visibility and control over how sensitive data moves across SaaS applications, AI agents, endpoints, and browsers. It is designed to stop data exfiltration and shadow AI usage before sensitive information leaves your environment.
Problem Solved
Legacy DLP wasn't built for how data moves today. AI apps have become exfiltration vectors, AI agents move data without human action, and employees bypass traditional controls. Nightfall solves this with an AI-native approach that intercepts, classifies, and remediates data threats across modern workflows.
Who is it for?
Nightfall is built for security operations teams and IT leaders at startups, mid-market companies, and Fortune 500 enterprises. It is best for organizations using AI tools (like ChatGPT, Claude, Copilot) and SaaS apps (Google Drive, Slack, Gmail) that need to enforce data policies. It is not ideal for small teams without a dedicated security function looking for a simple file-sharing tool.
Real Use Cases
Common use cases include preventing employees from uploading financial forecasts to ChatGPT, blocking emails with customer lists to personal accounts, discovering shadow MCP servers on endpoints, and stopping API key leaks in Slack. Nightfall also automates remediation by quarantining sensitive data and alerting users in real-time, with 80% of incidents resolved through automation.
Key features
- Data Exfiltration Prevention — Block sensitive data from leaving via SaaS apps, email, browsers, and AI prompts in real time.
- Shadow AI Detection — Discover and control employee use of unsanctioned AI tools and MCP servers.
- AI Agent Security — Intercept prompts, tool calls, and responses in coding agents like Cursor and Claude Code via hooks.
- Data Detection & Response — Automatically classify, quarantine, and remediate API keys, PHI, and other sensitive data.
- Data Lineage — Reconstruct full data movement history to identify exfiltration across files, apps, and devices.
- Real-Time Scanning — Scan across 12+ SaaS apps with 95% detection precision to reduce alert fatigue.
SaaSpartout Score
7.4
/10
Editorial score from our review methodology — not user ratings.
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Nightfall Pricing
Nightfall pricing: Per user/year, custom pricing.
For comparison: the median starting price in Cybersecurity is $9.99/month, measured across 116 tools we track. See the full SaaS Pricing Index →
Nightfall Complete
AI-powered DLP for your entire organization with complete visibility across SaaS, AI apps, and endpoints. Includes all Data Detection & Response and Data Exfiltration Prevention features, dedicated customer success manager, and priority support with 1-hour SLA. Priced per user per year (contact for quote).
Complete + AI Agent Security
Everything in Nightfall Complete plus AI Agent Security across endpoints, IDEs, MCP, Claude Cowork, and Claude Enterprise. Available in two tiers: Tier 1 (up to 3 apps) and Tier 2 (all supported apps), both priced per user per year. Includes hooks for Cursor, Claude Code, and VS Code; MCP discovery and inventory; OpenTelemetry audit trail; and Claude Compliance API.
Data Security Add-On
Optional Data Discovery and Classification Add-On for removing inadvertent sensitive data exposure across 12+ SaaS apps and email. Available in multiple data pack tiers starting at 150 GB included, with 1 TB, 3 TB, 5 TB, and 20 TB options priced per year.
Free product demo available on request. Pricing is custom and based on organizational size.
Frequently asked questions
What is Nightfall used for?
Nightfall is an AI-powered data loss prevention (DLP) platform used to monitor, detect, and prevent sensitive data (like PII, PHI, API keys) from leaving your organization through SaaS apps, AI tools, endpoints, and email.
How much does Nightfall cost?
Nightfall does not publish fixed prices. It offers custom per-user-per-year pricing with two main packages: Nightfall Complete and Complete + AI Agent Security. Contact sales for a quote based on your organization's size and needs.
Does Nightfall offer a free trial?
Nightfall does not list a free trial. It offers a free live product demo and an AI Exposure Assessment where you can see how it works in your environment.
Who is Nightfall best for?
Nightfall is best for security operations teams at mid-market companies to Fortune 500 enterprises that use AI tools and SaaS applications and need to control data movement. It's also suited for organizations adopting AI coding agents.
What are top Nightfall alternatives?
Top alternatives include traditional DLP vendors like Microsoft Purview, Google DLP, and Symantec. Other AI-specific options include Cyera, DataDome, and Avalor (now part of Cato Networks), but Nightfall differentiates itself with AI-agent-level security and MCP server visibility.
What is the main limitation of Nightfall?
Nightfall's primary limitation is that its most advanced AI Agent Security features (like MCP server discovery and IDE hooks) are only available in the higher-tier Complete + AI Agent Security package. Also, there is no self-serve or fixed pricing, requiring sales engagement.
