Stephen Gillett, the head of Best Buy Co Inc's digital business, is leaving the consumer electronics chain to become chief operating officer at data protection software company Symantec Corp .

Gillett, who worked at Best Buy for less than a year, was hired by former chief executive Brian Dunn in March to improve Best Buy's global digital strategy, digital marketing, entertainment offerings, multi-channel capabilities and business development.

At Symantec, Gillett is the first major hire by Steve Bennett, who was named CEO in July.

(Reporting by Brad Dorfman; Editing by Gary Hill)