I can't believe this remark gets +5 Informative! Everyone is responsible for their own security!
If I get a lock installed on the door of my new house, with a key that is the same as the key on 140000 other doors, guess what I am going to do next, install a new lock or wait until someone empties my house and blame the company that installed the lock.
BTW I am a customer of the same company since a few months, and Welkom01 is not the default password anymore. It is a random string.