Mcafee Inc, the California-based security management company, today announced plans to invest more than $80 million to expand its centre inIndia in the next four years and add 400 employees to its workforce by 2008.George Samenuk, chairman and CEO of Mcafee, said its branch in India was the "major reason" behind the firm increasing its profitability margin to 25% in 2005 when compared with 13% in the previous year and earning $1.15 billion dollars in 2005."One of the key drivers that helped Mcafee transform into a leading global security provider and achieve best-in-class profitability since 2002 is our R&D centre in India," he told reporters - referring to the Bangalore engineering group that constitute 30% of the company's global R&D team.Company executives said the stress would be on engineering ownership of many products in India. "The centre will focus on research and development of security solutions and product innovations, and will take ownership of some of the key security products it creates from requirements to customer release," they added.