Qualys, Inc. provides cloud security, compliance and related services and is based in Foster City, California. The company was founded in 1999 by Philippe Courtot who served as CEO until 2021. Qualys has over 19,000 customers in more than 130 countries, including a majority of the Forbes Global 100. The company's cloud platform and integrated suite of solutions help organizations simplify security operations and lower the cost of compliance by delivering critical security intelligence on demand and automating the full spectrum of auditing, compliance and protection for IT systems and web applications.