deceptive mail

[John Quarterman]

Make /bin/login mode 500 owned by root and it will fail on exec,
usually causing /etc/init to fork another copy of itself and the
new user to thus get a fresh copy of /bin/login for normal login,
or (perhaps with parentheses) an error message from the shell.
This mode also makes realistic login simulators (of the sort that
want to collect your password) harder to write, since they can't
just exec /bin/login afterwards and leave the user no wiser.
-- 
John Quarterman, CS Dept., University of Texas, Austin, Texas 78712 USA
jsq at ut-sally.ARPA, jsq at ut-sally.UUCP, {ihnp4,seismo,ctvax}!ut-sally!jsq