CloudSEK is a cybersecurity company founded in 2015 by Rahul Sasi that provides an AI-based threat management platform called XVigil. The platform monitors and analyzes digital threats from external sources including the surface web, deep web, dark web, and internet-exposed infrastructure. The system processes approximately 37 GB of data daily to detect, analyze, and report actionable threats to organizations.

The company's technology uses artificial intelligence and machine learning to automate threat detection and analysis with minimal human intervention. XVigil has evolved from a partly manual system in its initial 2017 launch to a fully automated platform. The platform employs machine learning classifiers capable of identifying threat severity levels and navigating internet sources to gather intelligence.

CloudSEK serves organizations globally across multiple regions including India, South East Asia, and the Americas. The company has raised approximately $10 million in funding, including a $7 million Series A round led by MassMutual Ventures in 2021, and an additional $19 million Series B1 round. The company has received recognition including awards from NASSCOM Emerge 50 in the cybersecurity category and the NASSCOM-DSCI Excellence Award for Security Product Company of the Year 2020. CloudSEK is also part of the NVIDIA Inception Program.