Wheels Inc., Pfizer

The spouses and domestic partners of about 1,800 Pfizer employees, including 23 from Connecticut, learned late last month about a data breach at Wheels Inc., which provides cars to the company, mostly for use by its sales force. The breach at Wheels, first reported by the Pharmalot Web site, released onto the Internet names, addresses, birth dates and driver's license numbers, but not Social Security numbers, according to the company.