An unusual breach notification issued by health insurer Humana shows how some organizations are identifying anomalous behaviors of voice technology users to detect potential fraud. The health insurer says it recently received an unspecified number of calls to its automated, toll-free “interactive voice response” telephone system that the company’s technology team deemed suspicious. The callers identified themselves with three types of information – date of birth, ZIP code, and Humana ID number or Social Security number. “At this time, no inappropriate action was taken within Humana systems using the information,” the notice says.”]