<s>
Bad	O
bunny	O
,	O
also	O
known	O
as	O
SB/Bad	O
Bunny-A	O
(	O
Sophos	O
)	O
and	O
StarOffice/Bad	O
Bunny	O
(	O
McAfee	O
)	O
,	O
is	O
a	O
multi-platform	O
computer	O
worm	O
written	O
in	O
several	O
scripting	O
languages	O
and	O
distributed	O
as	O
an	O
OpenOffice.org	B-Application
document	O
containing	O
a	O
macro	O
written	O
in	O
Star	B-Operating_System
Basic	I-Operating_System
.	O
</s>
<s>
Discovered	O
on	O
May	O
21	O
,	O
2007	O
,	O
the	O
worm	O
spreads	O
itself	O
by	O
dropping	O
malicious	O
script	O
files	O
that	O
affect	O
the	O
behavior	O
of	O
popular	O
IRC	B-Protocol
programs	O
mIRC	B-Language
and	O
X-Chat	B-Protocol
,	O
causing	O
it	O
to	O
send	O
the	O
worm	O
to	O
other	O
users	O
.	O
</s>
<s>
Body	O
:	O
"	O
Hey	O
'[USERNAME]'	O
you	O
like	O
my	O
BadBunny	B-Application
?	O
"	O
</s>
<s>
and	O
loads	O
one	O
of	O
four	O
different	O
scripts	O
named	O
badbunny.js	O
(	O
JS.Badbunny	O
)	O
under	O
Windows	O
,	O
badbunny.pl	O
(	O
Perl.Badbunny	B-Application
)	O
under	O
Linux/Unix	O
,	O
or	O
either	O
badbunny.rb	O
or	O
badbunnya.rb	O
(	O
Ruby.Badbunny	O
)	O
under	O
Mac	O
OS	O
X	O
.	O
</s>
