An information technology specialist has been indicted on a federal criminal charge for allegedly hacking into the server of a suburban Chicago healthcare company where he formerly worked as a contractor. Aaron Lockner, 35, of Downer’s Grove, Illinois, illegally accessed the server of the healthcare company, which operated a clinic in Oak Lawn, Ill., on April 16, 2018, according to an indictment. The cyber intrusion impaired medical examinations, treatment, and care of multiple individuals, the indictment states. Lockner had previously performed information security and technology work for the healthcare company and had access to its computer network, the indictment alleges. Two months before the cyberattack, Lockner sought and was denied an employment position with the healthcare company, the indictment states.