Nand Mulchandani took over as CEO of the DNS (domain name system) service provider on Nov. 5, replacing founder David Ulevitch, who will remain as the company's chief technology officer, according to a company spokeswoman.

Mulchandani is the latest VMware executive to depart after company cofounder and CEO Diane Green was ousted in July of this year. In September another VMware cofounder, Chief Scientist Mendel Rosenblum, resigned. Richard Sarwal, who led the company's research and development efforts, also left around the same time.

Mulchandani said Green's departure had nothing to do with his decision to take the OpenDNS post. "This was just an incredible opportunity," he said in an interview Thursday. "Too good to pass by."

Mulchandani had been with VMware just over a year, after the virtualization software vendor acquired his security company, Determina. As VMware's senior director for security products, Mulchandani was in charge of VMware's security strategy, considered critical to the company's future success. VMware is publicly traded, but the majority of the company is owned by storage vendor EMC.

As CEO at OpenDNS, Mulchandani plans to expand the company's consumer business, but also to take OpenDNS into the enterprise.