75 people had their names, social security numbers, and prescription information taken from the prescription service, Express Scripts' databases.
The extortionists threatened to release the medical information of millions if their demands were not met.
State Government and University of Missouri System employees received email notices about the security breach.
According to one email, none of the subscribers to the Missouri Consolidated Health Care Plan were part of the 75.
Express Scripts is offering a 1 million dollar reward to any information that leads to the arrest and conviction of those responsible.
From the State Capitol, I'm Rebecca Beitsch.