File reputation notification shows vague report

From time to time i see a notification on the home screen of SEPM (14.0 version). If i press on it, it shows a red dot and says there was a detection of download of file with bad reputation. There is nothing clickable in this windows, only the Report button. But this report just returns the full list of clients with information on when they have updated last time. How can i get the real report on what user and what PC had this download?