<s>
Commwarrior	B-Application
is	O
a	O
Symbian	B-Operating_System
Bluetooth	B-Protocol
worm	O
that	O
was	O
the	O
first	O
to	O
spread	O
via	O
Multimedia	O
Messaging	O
Service	O
(	O
MMS	O
)	O
and	O
Bluetooth	B-Protocol
.	O
</s>
<s>
The	O
worm	O
affects	O
only	O
the	O
Nokia	B-Language
Series	I-Language
60	I-Language
software	O
platform	O
.	O
</s>
<s>
Commwarrior	B-Application
was	O
particularly	O
effective	O
via	O
the	O
MMS	O
vector	O
it	O
used	O
to	O
infect	O
other	O
phones	O
.	O
</s>
<s>
Once	O
the	O
message	O
is	O
opened	O
,	O
the	O
virus	O
attempts	O
to	O
install	O
itself	O
on	O
the	O
phone	O
via	O
a	O
SIS	B-Language
file	O
.	O
</s>
<s>
A	O
secondary	O
method	O
of	O
infection	O
is	O
to	O
create	O
a	O
malicious	O
.SIS	B-Language
file	O
on	O
a	O
compromised	O
phone	O
.	O
</s>
<s>
Once	O
per	O
minute	O
thereafter	O
,	O
the	O
worm	O
attempts	O
to	O
send	O
this	O
file	O
to	O
any	O
phone	O
that	O
has	O
Bluetooth	B-Protocol
enabled	O
.	O
</s>
