_Note about Stack Trace Security
To help when debugging a problem, Confluence provides stack traces through the web interface when an error occurs. These stack traces include information about what Confluence was doing at the time, and some information about your deployment server.
This includes information such as operating system and version and Java version. With proper network security, this is not enough information to be considered dangerous. The username of the current user may be included.
Thread dumps include usernames and URLs by default. If you don't want to include this additional diagnostic information, you can disable Thread diagnostics.