Ylands.exe may create a file within the Steam installation directory which contains privacy sensitive information, namely:
Steam Id
Username
E-mail
First Name
Last Name
Address, ZIP, City & Country
Activated
Subscribed
Last logged on date
Account creation date
Account update date
Owned applications in Bohemia Store
This information is logged in a file called output_log_clean.txt typically found at C:\Program Files...
