According to health insurance giant Wellpoint Inc., a security breach may have inadvertently allowed internet access to the personal medical information of nearly 130,000 customers. The Indiana-based company said that Social Security numbers, pharmacy records and other personal health data of customers in several states were not properly secured.

The problem apparently stems from two computer servers which are maintained by a third-party vendor. Wellpoint declined to name the vendor.

Wellpoint has begun notifying customers of the issue by letter, and are offering one free year of credit monitoring services. According to Wellpoint spokeswoman Cheryl Leamon, they've not received any reports of identity theft or credit fraut.

To reduce the risk of similar incidents in the future, Leamon says that outside consults have already been hired.