Expanse, now known as Cortex by Palo Alto Networks, is a leading enterprise software company specializing in Attack Surface Management (ASM). The company focuses on protecting some of the world's most important organizations by providing a comprehensive inventory of their Internet assets. This means that Expanse helps organizations identify and manage all the systems and services they have exposed to the Internet, which could be potential targets for cyber-attacks.

Expanse serves large enterprises and critical infrastructure organizations, including those in finance, healthcare, and government sectors. These clients require robust security measures to protect sensitive data and maintain operational integrity. The company operates in the cybersecurity market, which is crucial for safeguarding digital assets in an increasingly interconnected world.

The business model of Expanse revolves around offering a subscription-based software service. Clients pay for continuous monitoring and assessment of their global Internet attack surface. This service includes discovering all Internet-exposed systems and services, evaluating risks in real-time, and providing actionable insights to security professionals. By doing so, Expanse helps organizations prioritize and address the most critical security threats.

Expanse makes money through these subscription fees, which are based on the level of service and the size of the client's network. The company’s proprietary technology, developed from research by the Defense Advanced Research Projects Agency (DARPA), ensures low false positive and false negative rates, providing clients with accurate and reliable data.

In summary, Expanse (Cortex by Palo Alto Networks) is a cybersecurity firm that offers advanced Attack Surface Management services to large enterprises and critical infrastructure organizations. It operates on a subscription-based model, providing continuous monitoring and risk assessment to help clients protect their Internet assets.

Keywords: cybersecurity, Attack Surface Management, enterprise software, Internet assets, risk assessment, continuous monitoring, subscription-based, DARPA, Palo Alto Networks, critical infrastructure.