Symantec (SYMC) has appointed Stephen Gillett, formerly the head of Best Buy's (BBY) digital ops and a current board member, to the new position of COO. His initial responsibilities include marketing, communications, and IT. Symantec CEO Steve Bennett has been busy overhauling management since taking over in July. Gillett was hired by Best Buy only in March after a stint at Starbucks, where he handled its Wi-Fi and mobile payments efforts. His responsibilities have been re-assigned to other execs.