In 1981, after Microsoft moved from programming languages into operating systems, Digital Research improved its position in programming languages by acquiring Eubanks's company, Compiler Systems. Eubanks went to work at DRI, but he soon came to doubt the company's long-term prospects. In 1984, Eubanks joined Symantec and from 1984 to 1986 he helped develop Q & A, an integrated database and wordprocessor with natural language query. He went on to become president and CEO of Symantec, guiding it into the software utility and anti-virus business.
He left in 1999 to become president and CEO of Oblix, a silicon valley startup that creates software for web security. Oblix was acquired by Oracle in March, 2005. Eubanks is a director of Concur and joined the board of directors of Oakley Networks in February, 2006.