Corelight vs SentinelOne
Side-by-side comparison of AI visibility scores, market position, and capabilities
Corelight provides enterprise network detection and response (NDR) built on the open-source Zeek network analysis framework; raised over $150M including a $75M Series D in 2021;
About
Corelight is a cybersecurity company founded in 2013 by Vern Paxson, Robin Sommer, and Seth Hall and headquartered in San Francisco, California. The company commercializes and extends Zeek (formerly known as Bro), an open-source network analysis framework developed by co-founder Vern Paxson at Lawrence Berkeley National Laboratory that has become the de facto standard for high-fidelity network traffic analysis in enterprise and government security operations. Corelight's platform provides network detection and response (NDR) capabilities — deep packet inspection, protocol parsing, and threat detection across network traffic — giving security teams comprehensive visibility into what is moving across their networks, which is critical for detecting threats that evade endpoint-based tools.
AI-powered endpoint security with $800M revenue; autonomous threat response and rollback on the Singularity Platform competing with CrowdStrike after CrowdStrike's 2024 global outage.
About
SentinelOne is a cybersecurity company providing AI-powered endpoint detection and response (EDR), extended detection and response (XDR), cloud security, and identity security through its Singularity Platform — using machine learning to detect and autonomously respond to malware, ransomware, and advanced threats in real time without requiring human intervention. Listed on NYSE (NYSE: S) and headquartered in Mountain View, California, SentinelOne generates approximately $800 million in annual revenue and competes with CrowdStrike for the enterprise endpoint security market.\n\nSentinelOne's Singularity Platform differentiates through autonomous response capability — when a threat is detected, the platform can automatically isolate infected machines, terminate malicious processes, roll back files to pre-attack states, and remediate damage without requiring a security analyst to approve each action. This "autonomous" response model reduces the threat dwell time and damage from fast-moving ransomware attacks that can encrypt thousands of files in minutes. The cloud-native architecture uses the Singularity Data Lake to correlate telemetry across endpoints, cloud workloads, and identities for unified threat detection.\n\nIn 2025, SentinelOne competes primarily with CrowdStrike Falcon for enterprise EDR/XDR market share — the two companies have become the dominant modern endpoint security vendors, having displaced legacy antivirus from McAfee and Symantec. The July 2024 CrowdStrike Falcon content update outage (which caused millions of Windows machines to crash) created a significant opportunity for SentinelOne, which accelerated customer acquisition in the months following. SentinelOne's 2025 strategy focuses on growing Purple AI (its generative AI security analyst that provides natural language threat investigation), expanding cloud workload protection, and growing identity security through its Singularity Identity product.
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