Source : Free On-Line Dictionary of Computing

disusered
     
        ({Usenet}) Said of a person whose account on a computer has
        been removed, especially for cause rather than through normal
        attrition.  "He got disusered when they found out he'd been
        {cracking} through the school's {Internet} access."  The verb
        "disuser" is less common.  Both usages probably derive from
        the DISUSER account status flag on {VMS}; setting it disables
        the account.
     
        [{Jargon File}]
     
        (1994-12-08)