Today I tried to login OTRS, but I could not because the OTRS is complaining that my browser is too old (see below). I’m using iceweasel 38.5 which is the current version of Debian stable AND the current ESR of Firefox. It is neither “old” nor insecure. Please allow me login again, there are tickets to handle!
The browser you are using is too old. OTRS runs with a huge lists of browsers, please upgrade to one of these. Please see the documentation or ask your admin for further information.