Former information technology employees at Home Depot claim that the retailer’s management had been warned for years that its retail systems were vulnerable to attack, according to a report by the New York Times. Resistance to advice on fixing systems reportedly led several members of Home Depot’s computer security team to quit, and one who remained warned friends to use cash when shopping at the retailer’s stores. In 2012, Home Depot hired Ricky Joe Mitchell as its senior IT security architect.