VirnetX is a publicly traded Internet security software and technology company based in Zephyr Cove, Nevada. Founded in 2005, its patent portfolio includes U.S. and international patents in areas such as DNS and network communication. Since 2010, VirnetX has been in litigation with companies including Apple, Cisco, and Microsoft. VirnetX has been described as a patent troll, whose primary business model is patent licensing and suing infringing companies. The company has won intellectual property litigation against various technology companies. Wikipedia