9. Malwarebytes
CEO: Marcin Kleczynski
Malwarebytes saw 603 percent growth over the last three years, with revenue in 2015 of $69.3 million. Malwarebytes was ranked No. 647 overall on the INC 5000. Based in Santa Clara, Calif., the company has been on a fast trajectory since it launched its malware prevention and remediation solutions in 2008. Malwarebytes is well-known in the consumer market, but has been working to move into the enterprise space with a growing channel model. It landed $50 million in Series B funding in January to help continue that growth.
