“Walgreens recently began notifying an undisclosed number of customers that their personal information may have been stolen by a former pharmacy employee in Atlanta, Ga., between March 3, 2014 and April 14, 2014, and provided to a third party. The stolen data may have included the affected customers’ names, birthdates, and Social Security numbers in the form of Medicare ID numbers.”
Source: Walgreens Acknowledges Insider Breach – eSecurity Planet