Micro Focus ArcSight is a cyber security product, first released in 2000, that provides big data security analytics and intelligence software for security information and event management (SIEM) and log management. ArcSight is designed to help customers identify and prioritize security threats, organize and track incident response activities, and simplify audit and compliance activities. ArcSight became a subsidiary of Hewlett-Packard in 2010. It was merged with Micro Focus on September 1, 2017.