Nightfall
nightfall.aiStop data leaks to AI—and everywhere else
Securitydata-loss-preventiondlpai-securitysaas-securityinsider-threatshadow-aiendpoint-security

About
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.
Problem
Organizations struggle to prevent sensitive data from leaking through AI apps, SaaS tools, and endpoints because legacy DLP solutions rely on outdated pattern matching and can't keep up with modern threats.
For
Security and compliance teams at startups to Fortune 500 enterprises
How it works
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.
Business model
subscription
Status
launched
Company
Nightfall AI