In much of the FB code, you will see

or something similar, which sets true to the opposite of zero, which will never cause problems even if the value of true (1/ -1) is changed.

I think that's called a shortcut on English edition.

I believe it has to run as the SYSTEM user, which services do, but if you check the "Show processes from all users" box, it should show everything. I don't think it's possible to hide things from Administrators, but maybe users with lower privledges. Task manager just uses some kind of process enume...