Arbor was founded out of groundbreaking research conducted at the University of Michigan. This research was eventually funded by the U.S. Defense Agency Research Projects Administration (DARPA).  Out of that research, Arbor Networks was created in 2000.

Since then, Arbor has focused exclusively on researching, detecting and mitigating network-based threats. The company is best known for its pervasive footprint in service provider networks. Arbor technology is deployed in 70% of service provider networks globally, including 90% of tier one operators. Arbor technology is also broadly deployed among the largest hosting and cloud providers.