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Nightfall AI is an enterprise security platform designed to control how people, applications, and autonomous AI agents access and move sensitive data. It provides real time protection across AI tools, MCP servers, endpoints, browsers, SaaS platforms, and email, helping organizations prevent data exposure and exfiltration without slowing business operations. Key capabilities include an MCP Gateway that approves trusted servers and blocks unauthorized ones, inference hooks that inspect prompts, tool calls, and model responses, and prompt injection interception that identifies malicious instructions hidden in prompts, files, or tool responses. Nightfall also helps prevent shadow AI usage by controlling data sent to personal ChatGPT accounts, unmanaged copilots, and browser based AI tools. The platform includes sensitive data discovery and classification, lineage based exfiltration prevention, real time detection and response, and investigation intelligence. Its pre trained detectors identify secrets, source code, and customer personally identifiable information without requiring extensive rule creation. Alerts include user identity, role, data origin, destination, and related activity. Nightfall reports 95 percent detection precision, deployment in one working hour, and an average return on investment of 20 times. It is used by hundreds of security teams and supports integrations with major collaboration, productivity, CRM, storage, and communication services.
