The servers Lin allegedly targeted contained several key company databases, including a critical patient-specific drug interaction conflict database known as the Drug Utilization Review (DUR). Pharmacists use the DUR before dispensing medication to determine whether there could be unsafe interactions between a patient's prescribed drugs.

Also included in the target were servers containing applications relating to clients' clinical analyses, rebate applications, billing and managed care processing, as well as new prescription call-ins from doctors and coverage determination applications.

Records containing internal Medco applications, including the corporate financials, pharmacy maintenance tracking, Web and pharmacy statistics reporting and employee payroll processing, were also potentially affected.

Last week, a former UBS PaineWebber systems administrator to 97 months in prison for launching a logic bomb inside the company's servers that he hoped would cause the company's stock to go down. In that case, Roger Duronio, 63, of Bogota, N.J., planted a logic bomb into 1,000 of UBS PaineWebber's networked computers in an attempt to profit from a drop in the stock price, but the drop didn't occur and he lost his $23,000 stock investment.