<s>
is	O
a	O
computer	O
virus	O
,	O
a	O
member	O
of	O
the	O
Slow	O
virus	O
family	O
and	O
distantly	O
related	O
to	O
the	O
Jerusalem	B-Application
virus	I-Application
family	O
.	O
</s>
<s>
It	O
is	O
named	O
after	O
the	O
city	O
of	O
Scotts	O
Valley	O
,	O
although	O
that	O
is	O
spelled	O
without	O
an	O
apostrophe	B-Language
.	O
</s>
<s>
Scott	B-Application
's	I-Application
Valley	I-Application
is	O
a	O
very	O
standard	O
memory	O
resident	O
DOS	B-Device
file	O
infector	O
.	O
</s>
<s>
It	O
does	O
not	O
infect	O
COMMAND.COM	B-Operating_System
.	O
</s>
<s>
Because	O
Scott	B-Application
's	I-Application
Valley	I-Application
has	O
never	O
been	O
fully	O
analysed	O
,	O
it	O
is	O
unknown	O
whether	O
it	O
also	O
infects	O
OVL	B-General_Concept
files	I-General_Concept
as	O
most	O
Jerusalem	B-Application
variants	O
do	O
.	O
</s>
<s>
Scott	B-Application
's	I-Application
Valley	I-Application
is	O
only	O
partially	O
analysed	O
,	O
and	O
as	O
such	O
,	O
this	O
list	O
of	O
symptoms	O
may	O
be	O
incomplete	O
.	O
</s>
<s>
Interrupt	B-Application
21	O
will	O
be	O
hooked	O
.	O
</s>
<s>
Scott	B-Application
's	I-Application
Valley	I-Application
is	O
a	O
member	O
of	O
the	O
Slow	O
virus	O
family	O
,	O
which	O
has	O
been	O
associated	O
with	O
system	O
slowdowns	O
,	O
although	O
this	O
symptom	O
is	O
unconfirmed	O
.	O
</s>
<s>
This	O
could	O
stem	O
from	O
the	O
Slow	O
virus	O
 '	O
(	O
and	O
thus	O
the	O
Scott	B-Application
's	I-Application
Valley	I-Application
virus	I-Application
 '	O
)	O
relationship	O
to	O
the	O
Jerusalem	B-Application
virus	I-Application
,	O
which	O
slowed	O
down	O
the	O
system	O
after	O
30	O
seconds	O
and	O
displayed	O
a	O
black	O
box	O
in	O
the	O
lower	O
lefthand	O
corner	O
.	O
</s>
<s>
It	O
is	O
not	O
believed	O
that	O
Scott	B-Application
's	I-Application
Valley	I-Application
exhibits	O
the	O
"	O
black	O
box	O
"	O
behaviour	O
,	O
nor	O
that	O
it	O
carries	O
Jerusalem	B-Application
's	O
destructive	O
payload	O
.	O
</s>
<s>
The	O
WildList	O
,	O
an	O
organisation	O
tracking	O
computer	O
viruses	O
,	O
never	O
reported	O
Scott	B-Application
's	I-Application
Valley	I-Application
as	O
being	O
in	O
the	O
field	O
.	O
</s>
<s>
Like	O
most	O
older	O
,	O
rare	O
DOS	B-Device
viruses	O
,	O
it	O
is	O
probable	O
that	O
Scott	B-Application
's	I-Application
Valley	I-Application
has	O
become	O
extinct	O
,	O
and	O
obsolete	O
at	O
the	O
minimum	O
.	O
</s>
