For those who installed TigerGraph with your own username and sudo password, I strongly suggest you change your password immediately as your login credentials are saved in plain text file somewhere in the installation directory.
We are looking into this as a priority. I will provide an update soon.
Update: Thanks Jim for providing additional information. Looks like this is a case of temporary storage. We are fixing this issue in the next bug fix releases. In the interim, please change password if you have installed interactive mode.
Thanks again for reporting this issue.
Rayees (TigerGraph Product Management)