In Cybersecurity, Data and Tech German Federal Labor Court: Employer cannot use information from secret keylogger software as evidence in court August 18, 2017 by Julia Kaufmann, Prof. Dr. Michael Schmidl, Holger Lutz and Steffen Scheuer 4 Mins Read Information obtained via a keylogger software secretly installed on an employee’s computer cannot be used as evidence in court – some exceptions apply.