Third party libraries used by Integration Server can log user data, particularly at debug or trace log levels. These messages go into the log files stored in Software AG_directory /profiles/IS_instanceName/logs folder. The wrapper.log located in this directory captures all the message that go to System.out. Use a text editor to search the wrapper.log as well as the other log files in the logs folder for user information (user names, client IP addresses, email addresses). Then, remove or replace the found data.