Nightfall AI

Nightfall AI, formerly known as Watchtower AI, is the industry’s first cloud-native data loss prevention platform.

Nightfall™ uses machine learning to identify business-critical data, like customer PII, across your SaaS, APIs, and data infrastructure, so you can manage & protect it.

Nightfall AI was founded in 2018 by Isaac Madan, & Rohan Sathe. The company is headquartered in San Francisco, California.


Nightfall leverages machine learning and natural language processing to discover, classify, and protect sensitive information across SaaS and data infrastructure, providing continuous protection for cloud services like Slack, GitHub, and AWS.


Nightfall has scaled rapidly to a broad set of customers, ranging from hyper-growth tech startups to Fortune 500 enterprises, across consumer-facing & highly-regulated industries like healthcare, insurance, and education. It integrates directly with all your SaaS, APIs, and data infrastructure.


Nightfall AI is backed by Bain Capital Ventures, Venrock, Pear VC and others. The company raised $20.3M from its single "Series A" financing on Nov 07, 2019.



  • Year founded: 2018
  • Funding Info: $20.3M over 1 Round (Latest Funding Type: Series A)
  • Yearly Revenue: NA
  • Employee Size: 11-50
  • Business Valuation: NA
  • City/Town: San Francisco
  • State: California
  • Country: United States
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