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Simon Crosby, Ian Pratt to leave Citrix

XenSource co-founders Simon Crosby and Ian Pratt are leaving Citrix Systems to tackle their next project: cloud security.

Crosby, Citrix’s CTO, wrote today on his blog that he and Pratt, a Citrix vice president, will be co-founders of a new cloud security startup called Bromium. Bromium remains in stealth mode, but Crosby hinted at its direction in his post:

I remain firmly of the view that virtualization can offer a new toolset that can help to deliver a more secure and trustworthy computing infrastructure. … We are fusing deep virtualization and security systems DNA to build a powerful set of tools that can offer continuous endpoint protection.

Gaurav Banga, the creator of Phoenix Hyperspace, is another co-founder of Bromium,  whose investors so far include Andreessen Horowitz, Ignition Partners and Lightspeed Venture Partners. George Kurtz, worldwide CTO and executive vice president at McAfee, is a board member.

Crosby wrote that he and Pratt “will remain active in our stewardship, contribution to, and promotion of the key building blocks of open infrastructure:,,, the Open Networking Foundation and other projects.” He also emphasized that Bromium “does not intend to compete with any virtual infrastructure or security vendor.”

Crosby and Pratt joined Citrix when the company acquired XenSource in 2007. In a statement, Citrix said, “While we will obviously miss their day-to-day presence as employees here at Citrix, we’re genuinely excited about the Bromium vision and believe it will address some much needed industry challenges that are highly complementary to the Citrix virtualization, networking and cloud strategy.”

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