Nightfall
Stop data leaks to AI—and everywhere else

Nightfall is an AI-native data loss prevention (DLP) and data security platform that monitors and protects sensitive data across SaaS apps, endpoints, browsers, email, and generative AI tools. It uses AI-based detection models, LLM-powered classifiers, and behavioral analysis to identify and block unauthorized data exfiltration in real time. The platform includes an agentic analyst called Nyx that autonomously investigates incidents and enforces context-aware policies.
Nightfall deploys via API integrations, lightweight endpoint agents, and browser plugins to monitor data flows in real time, using AI-based classifiers and data lineage tracking to detect and block sensitive data exposure or exfiltration.
Security and compliance teams at startups to Fortune 500 enterprises
Background.
- Status
- launched
- Business model
- subscription
- Company
- Nightfall AI
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