[6] The company was founded in 2000 when co-founders Farnam Jahanian and Rob Malan spun out research from the University of Michigan, sponsored by DARPA, Cisco, and Intel.

The acquisition was expected to increase the total addressable market (TAM) for Arbor to $750 million in 2008, and to $1.5 billion by the end of 2009.

[1] On September 3, 2013, Arbor Networks announced that it had acquired privately held Packetloop, a leader in Security Analytics based in Sydney, Australia.

In addition to its headquarters in Burlington, Massachusetts, the company also has offices in Ann Arbor, Michigan, London, and Singapore.

Wired stated that due to the popularity of Arbor's software among ISPs, the company "likely knows more about the [Internet's] ebbs and flows than anyone outside of the National Security Agency".