XSS bug on Arbor Networks website

Arbor Networks is a leading provider of network security and monitoring solutions for global networks. Its customers include over 70 percent of the world’s ISPs and many large enterprises. Arbor solutions deliver best-in-class network security and visibility, along with the power to improve profitability by deploying differentiated, revenue-generating secure services. By employing flow-based and deep packet inspection (DPI) technologies, Arbor solutions measure and protect the entire network – from the service provider core to the broadband edge

XSS Poc and Mirror

I think that they are joking!