Well, I wouldn't say security risks actually but certainly privacy risks. Not sure if there's a way to do what you wish. I have all my search histories turned off as well as the suggestions etc. I also clear cookies and history every few hours online if not more often depending on the sites I visit. Kind of a strange guy that way, but go figure....... I let Bing track me completely for the silly points they give. Is that dumb or what? lol. ANYWAY, my point being ... securitywise your search histories aren't all that much of a concern, just privacy.