<s>
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
(	O
MSE	O
)	O
is	O
an	O
antivirus	B-Application
software	I-Application
(	O
AV	O
)	O
product	O
that	O
provides	O
protection	O
against	O
different	O
types	O
of	O
malicious	O
software	O
,	O
such	O
as	O
computer	O
viruses	O
,	O
spyware	O
,	O
rootkits	O
,	O
and	O
Trojan	O
horses	O
.	O
</s>
<s>
Prior	O
to	O
version	O
4.5	O
,	O
MSE	O
ran	O
on	O
,	O
Windows	B-Application
Vista	I-Application
,	O
and	O
Windows	B-Device
7	I-Device
,	O
but	O
not	O
on	O
Windows	B-Application
8	I-Application
and	O
later	O
versions	O
,	O
which	O
have	O
built-in	O
AV	O
components	O
known	O
as	O
Windows	B-Application
Defender	I-Application
.	O
</s>
<s>
MSE	O
4.5	O
and	O
later	O
versions	O
do	O
not	O
run	O
on	O
Windows	B-Application
XP	I-Application
.	O
</s>
<s>
The	O
license	O
agreement	O
allows	O
home	O
users	O
and	O
small	O
businesses	O
to	O
install	O
and	O
use	O
the	O
product	O
free	B-License
of	I-License
charge	I-License
.	O
</s>
<s>
It	O
replaces	O
Windows	B-Protocol
Live	I-Protocol
OneCare	I-Protocol
,	O
a	O
discontinued	O
commercial	O
subscription-based	O
AV	O
service	O
,	O
and	O
the	O
free	O
Windows	B-Application
Defender	I-Application
,	O
which	O
only	O
protected	O
users	O
from	O
spyware	O
until	O
Windows8	B-Application
.	O
</s>
<s>
Built	O
upon	O
the	O
same	O
scanning	O
engine	O
and	O
virus	O
definitions	O
as	O
other	O
Microsoft	O
antivirus	B-Application
products	O
,	O
it	O
provides	O
real-time	O
protection	O
,	O
constantly	O
monitoring	O
activities	O
on	O
the	O
computer	O
,	O
scanning	O
new	O
files	O
as	O
they	O
are	O
created	O
or	O
downloaded	O
,	O
and	O
disabling	O
detected	O
threats	O
.	O
</s>
<s>
It	O
lacks	O
the	O
OneCare	B-Protocol
personal	B-Protocol
firewall	I-Protocol
and	O
the	O
Forefront	B-General_Concept
Endpoint	I-General_Concept
Protection	I-General_Concept
centralized	O
management	O
features	O
.	O
</s>
<s>
Microsoft	O
's	O
announcement	O
of	O
its	O
own	O
AV	B-Application
software	I-Application
on	O
18	O
November	O
2008	O
,	O
was	O
met	O
with	O
mixed	O
reactions	O
from	O
the	O
AV	O
industry	O
.	O
</s>
<s>
Symantec	O
,	O
McAfee	O
,	O
and	O
Kaspersky	O
Lab	O
—	O
three	O
competing	O
independent	B-Application
software	I-Application
vendors	I-Application
—	O
dismissed	O
it	O
as	O
an	O
unworthy	O
competitor	O
,	O
but	O
AVG	O
Technologies	O
and	O
Avast	O
Software	O
appreciated	O
its	O
potential	O
to	O
expand	O
consumers	O
 '	O
choices	O
of	O
AV	B-Application
software	I-Application
.	O
</s>
<s>
AVG	O
,	O
McAfee	O
,	O
Sophos	O
,	O
and	O
Trend	O
Micro	O
claimed	O
that	O
the	O
integration	O
of	O
the	O
product	O
into	O
Microsoft	B-Application
Windows	I-Application
would	O
be	O
a	O
violation	O
of	O
competition	O
law	O
.	O
</s>
<s>
The	O
product	O
received	O
generally	O
positive	O
reviews	O
,	O
praising	O
its	O
user	B-Application
interface	I-Application
,	O
low	O
resource	O
usage	O
,	O
and	O
freeware	B-License
license	O
.	O
</s>
<s>
According	O
to	O
a	O
March	O
2012	O
report	O
by	O
anti-malware	B-Application
specialist	O
OPSWAT	O
,	O
MSE	O
was	O
the	O
most	O
popular	O
AV	O
product	O
in	O
North	O
America	O
and	O
the	O
second	O
most	O
popular	O
in	O
the	O
world	O
,	O
which	O
has	O
resulted	O
in	O
the	O
appearance	O
of	O
several	O
rogue	O
antivirus	B-Application
programs	I-Application
that	O
try	O
to	O
impersonate	O
it	O
.	O
</s>
<s>
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
automatically	O
checks	O
and	O
downloads	O
the	O
latest	O
virus	O
definitions	O
from	O
Microsoft	O
Update	O
which	O
is	O
updated	O
three	O
times	O
a	O
day	O
.	O
</s>
<s>
On	O
30	O
September	O
2011	O
,	O
a	O
faulty	O
definition	O
update	O
caused	O
the	O
product	O
to	O
incorrectly	O
tag	O
Google	B-Application
Chrome	I-Application
as	O
malware	O
.	O
</s>
<s>
MSE	O
originally	O
ran	O
on	O
Windows	B-Application
XP	I-Application
,	O
Windows	B-Application
Vista	I-Application
and	O
Windows	B-Device
7	I-Device
,	O
although	O
versions	O
4.5	O
and	O
later	O
do	O
not	O
run	O
on	O
Windows	B-Application
XP	I-Application
and	O
Microsoft	O
stopped	O
producing	O
automatic	O
definition	O
updates	O
for	O
Windows	B-Application
XP	I-Application
on	O
14	O
July	O
2015	O
(	O
however	O
,	O
manual	O
definition	O
updates	O
are	O
still	O
available	O
for	O
Windows	B-Application
XP	I-Application
users	O
who	O
run	O
older	O
versions	O
of	O
MSE	O
)	O
.	O
</s>
<s>
MSE	O
is	O
built	O
upon	O
the	O
same	O
foundation	O
as	O
other	O
Microsoft	O
security	O
products	O
;	O
they	O
all	O
use	O
the	O
same	O
anti-malware	B-Application
engine	O
known	O
as	O
Microsoft	O
Malware	O
Protection	O
Engine	O
(	O
MSMPENG	O
)	O
and	O
virus	O
definitions	O
.	O
</s>
<s>
It	O
does	O
not	O
have	O
the	O
personal	B-Protocol
firewall	I-Protocol
component	O
of	O
OneCare	B-Protocol
and	O
the	O
centralized	O
management	O
features	O
of	O
Forefront	B-General_Concept
Endpoint	I-General_Concept
Protection	I-General_Concept
.	O
</s>
<s>
As	O
a	O
part	O
of	O
real-time	O
protection	O
,	O
MSE	O
reports	O
all	O
suspicious	O
behaviors	O
of	O
monitored	O
programs	O
to	O
Microsoft	B-Device
Active	I-Device
Protection	I-Device
Service	I-Device
(	O
MAPS	O
,	O
formerly	O
Microsoft	B-Device
SpyNet	I-Device
)	O
by	O
default	O
.	O
</s>
<s>
Hardware	O
requirements	O
for	O
the	O
product	O
depend	O
on	O
the	O
operating	B-General_Concept
system	I-General_Concept
;	O
on	O
a	O
computer	O
running	O
Windows	B-Application
Vista	I-Application
or	O
Windows	B-Device
7	I-Device
,	O
it	O
requires	O
a	O
1GHz	O
processor	O
,	O
1GB	O
of	O
RAM	O
,	O
a	O
computer	B-Device
monitor	I-Device
with	O
a	O
display	B-General_Concept
resolution	I-General_Concept
of	O
at	O
least	O
800	O
×	O
600	O
pixels	B-Algorithm
,	O
200MB	O
of	O
free	O
hard	B-Device
disk	I-Device
space	O
and	O
a	O
stable	O
Internet	O
connection	O
.	O
</s>
<s>
On	O
18	O
November	O
2008	O
,	O
Microsoft	O
announced	O
plans	O
for	O
a	O
free	O
consumer	O
security	O
product	O
,	O
codenamed	B-General_Concept
Morro	B-Application
.	O
</s>
<s>
This	O
development	O
marked	O
a	O
change	O
in	O
Microsoft	O
's	O
consumer	O
AV	O
marketing	O
strategy	O
:	O
instead	O
of	O
offering	O
a	O
subscription-based	O
security	O
product	O
with	O
a	O
host	O
of	O
other	O
tools	O
,	O
such	O
as	O
backup	B-Protocol
and	O
a	O
personal	B-Protocol
firewall	I-Protocol
,	O
Morro	B-Application
would	O
offer	O
free	O
AV	O
protection	O
with	O
a	O
smaller	O
impact	O
on	O
system	O
resources	O
.	O
</s>
<s>
Amy	O
Barzdukas	O
,	O
senior	O
director	O
of	O
product	O
management	O
for	O
the	O
Online	O
Services	O
and	O
Windows	O
Division	O
at	O
Microsoft	O
,	O
announced	O
that	O
Morro	B-Application
would	O
not	O
directly	O
compete	O
with	O
other	O
commercial	O
AV	B-Application
software	I-Application
;	O
rather	O
it	O
was	O
focused	O
on	O
the	O
50	O
to	O
60	O
percent	O
of	O
PC	O
users	O
who	O
did	O
not	O
have	O
or	O
would	O
not	O
pay	O
for	O
AV	O
protection	O
.	O
</s>
<s>
By	O
17	O
June	O
2009	O
,	O
the	O
official	O
name	O
of	O
Morro	B-Application
was	O
revealed	O
:	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
.	O
</s>
<s>
It	O
includes	O
Network	O
Inspection	O
System	O
(	O
NIS	O
)	O
,	O
a	O
network	O
intrusion	O
detection	O
system	O
that	O
works	O
on	O
Windows	B-Application
Vista	I-Application
and	O
Windows	B-Device
7	I-Device
,	O
as	O
well	O
as	O
a	O
new	O
anti-malware	B-Application
engine	O
that	O
employs	O
heuristics	O
in	O
malware	O
detection	O
.	O
</s>
<s>
Version	O
2.0	O
integrates	O
with	O
Internet	B-Application
Explorer	I-Application
to	O
protect	O
users	O
against	O
web-based	O
threats	O
.	O
</s>
<s>
Sixteen	O
months	O
after	O
the	O
release	O
of	O
version	O
2.0	O
,	O
Microsoft	O
skipped	O
version	O
3.0	O
and	O
released	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
4.0	O
.	O
</s>
<s>
On	O
the	O
same	O
day	O
,	O
Microsoft	O
announced	O
that	O
starting	O
with	O
this	O
version	O
,	O
Windows	B-Application
XP	I-Application
would	O
not	O
be	O
supported	O
.	O
</s>
<s>
It	O
was	O
version	O
4.10.209.0	O
for	O
Windows	B-Application
Vista	I-Application
and	O
Windows	B-Device
7	I-Device
.	O
</s>
<s>
This	O
update	O
fixes	O
a	O
bug	O
that	O
was	O
introduced	O
earlier	O
in	O
version	O
4.10.205.0	O
which	O
removed	O
the	O
"	O
Scan	O
with	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
"	O
entry	O
from	O
the	O
right-click	O
context	O
menu	O
on	O
files	O
and	O
folders	O
.	O
</s>
<s>
Support	O
for	O
MSE	O
has	O
officially	O
ended	O
for	O
Windows	B-Application
Vista	I-Application
and	O
Windows	B-Application
XP	I-Application
.	O
</s>
<s>
Although	O
support	O
for	O
Windows	B-Device
7	I-Device
ended	O
on	O
14	O
January	O
2020	O
Microsoft	O
will	O
continue	O
to	O
update	O
virus	O
definitions	O
for	O
existing	O
users	O
until	O
2023	O
.	O
</s>
<s>
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
does	O
not	O
run	O
on	O
Windows	B-Application
8	I-Application
and	O
later	O
,	O
which	O
has	O
its	O
own	O
security	O
subsystem	O
,	O
Windows	B-Application
Defender	I-Application
.	O
</s>
<s>
On	O
13	O
September	O
2011	O
,	O
at	O
the	O
Build	O
conference	O
in	O
Anaheim	O
,	O
California	O
,	O
Microsoft	O
unveiled	O
the	O
developer	O
preview	O
of	O
Windows	B-Application
8	I-Application
,	O
which	O
had	O
a	O
security	O
component	O
capable	O
of	O
preventing	O
an	O
infected	O
USB	O
flash	O
memory	O
from	O
compromising	O
the	O
system	O
during	O
the	O
boot	O
process	O
.	O
</s>
<s>
On	O
15	O
September	O
,	O
Windows	B-Application
8	I-Application
developer	O
's	O
blog	O
confirmed	O
that	O
Windows	B-Application
Defender	I-Application
in	O
Windows	B-Application
8	I-Application
would	O
take	O
over	O
the	O
role	O
of	O
virus	B-Application
protection	I-Application
.	O
</s>
<s>
In	O
an	O
included	O
video	O
,	O
Jason	O
Garms	O
of	O
Microsoft	O
showed	O
how	O
Windows	B-Application
Defender	I-Application
is	O
registered	O
with	O
Action	O
Center	O
as	O
an	O
AV	O
and	O
spyware	O
protection	O
tool	O
,	O
and	O
how	O
it	O
blocks	O
drive-by	O
malware	O
.	O
</s>
<s>
On	O
3	O
March	O
2012	O
,	O
Softpedia	O
reviewed	O
the	O
consumer	O
preview	O
of	O
Windows	B-Application
8	I-Application
and	O
noted	O
the	O
similarity	O
in	O
appearance	O
of	O
Windows	B-Application
Defender	I-Application
and	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
4.0	O
Beta	O
.	O
</s>
<s>
According	O
to	O
Softpedia	O
,	O
Windows	B-Application
8	I-Application
Setup	O
requires	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
to	O
be	O
uninstalled	O
before	O
upgrading	O
from	O
Windows	B-Device
7	I-Device
.	O
</s>
<s>
The	O
product	O
's	O
license	O
agreement	O
allows	O
home	O
users	O
to	O
download	O
,	O
install	O
and	O
use	O
it	O
on	O
an	O
unlimited	O
number	O
of	O
computers	O
in	O
their	O
households	O
free	B-License
of	I-License
charge	I-License
,	O
as	O
long	O
as	O
each	O
computer	O
has	O
a	O
legitimately	O
licensed	O
copy	O
of	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
MSE	O
requires	O
no	O
registration	O
or	O
personal	O
information	O
to	O
be	O
submitted	O
during	O
installation	O
;	O
however	O
,	O
the	O
validity	O
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
's	O
license	O
is	O
verified	O
during	O
and	O
after	O
installation	O
using	O
the	O
Windows	O
Genuine	O
Advantage	O
system	O
.	O
</s>
<s>
The	O
announcement	O
and	O
debut	O
of	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
was	O
met	O
with	O
mixed	O
responses	O
from	O
the	O
AV	O
industry	O
.	O
</s>
<s>
Tom	O
Powledge	O
of	O
Symantec	O
urged	O
his	O
customers	O
to	O
be	O
mindful	O
of	O
what	O
protection	O
they	O
chose	O
,	O
bearing	O
in	O
mind	O
that	O
OneCare	B-Protocol
offered	O
"	O
substandard	O
protection	O
"	O
and	O
an	O
"	O
inferior	O
user	O
experience	O
"	O
.	O
</s>
<s>
Joris	O
Evers	O
,	O
director	O
of	O
worldwide	O
public	O
relations	O
for	O
McAfee	O
stated	O
"	O
with	O
OneCare	B-Protocol
's	O
market	O
share	O
of	O
less	O
than	O
2%	O
,	O
we	O
understand	O
Microsoft	O
's	O
decision	O
to	O
shift	O
attention	O
to	O
their	O
core	O
business.	O
"	O
</s>
<s>
Justin	O
Priestley	O
of	O
Kaspersky	O
stated	O
that	O
Microsoft	O
"	O
continued	O
to	O
hold	O
a	O
very	O
low	O
market	O
share	O
in	O
the	O
consumer	O
market	O
,	O
and	O
we	O
do	O
n't	O
expect	O
the	O
exit	O
of	O
OneCare	B-Protocol
to	O
change	O
the	O
playing	O
field	O
drastically.	O
"	O
</s>
<s>
Vincent	O
Steckler	O
,	O
Avast	O
Software	O
CEO	O
wrote	O
in	O
a	O
blog	O
post	O
"	O
MSE	O
is	O
not	O
the	O
silver	O
bullet	O
but	O
it	O
is	O
also	O
not	O
the	O
bad	O
sequel	O
to	O
One	B-Protocol
Care	I-Protocol
 [ sic ] 	O
that	O
some	O
claim.	O
"	O
</s>
<s>
AVG	O
has	O
believed	O
in	O
the	O
right	O
to	O
free	B-Operating_System
antivirus	I-Operating_System
software	O
for	O
the	O
past	O
eight	O
years.	O
"	O
</s>
<s>
However	O
,	O
AVG	O
raised	O
the	O
issue	O
of	O
distributing	O
the	O
software	O
product	O
and	O
said	O
,	O
"	O
Microsoft	O
will	O
have	O
to	O
do	O
more	O
than	O
simply	O
make	O
the	O
product	O
available	O
,	O
"	O
adding	O
that	O
integration	O
of	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
with	O
Microsoft	B-Application
Windows	I-Application
would	O
be	O
a	O
violation	O
of	O
competition	O
law	O
.	O
</s>
<s>
The	O
announcement	O
of	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
affected	O
the	O
stocks	O
of	O
AV	O
vendors	O
.	O
</s>
<s>
On	O
19	O
November	O
2008	O
,	O
after	O
Microsoft	O
announced	O
codename	O
Morro	B-Application
,	O
Symantec	O
and	O
McAfee	O
shares	O
fell	O
9.44	O
and	O
6.62	O
percent	O
respectively	O
.	O
</s>
<s>
Daniel	O
Ives	O
,	O
an	O
analyst	O
with	O
FBR	O
Capital	O
Markets	O
,	O
said	O
that	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
would	O
be	O
a	O
"	O
long-term	O
competitive	O
threat	O
"	O
,	O
although	O
near-term	O
impact	O
would	O
be	O
negligible	O
.	O
</s>
<s>
The	O
public	O
beta	O
version	O
received	O
several	O
reviews	O
,	O
citing	O
its	O
low	O
resource	O
usage	O
,	O
straightforward	O
user	B-Application
interface	I-Application
and	O
price	O
point	O
.	O
</s>
<s>
Brian	O
Krebs	O
of	O
The	O
Washington	O
Post	O
reported	O
that	O
a	O
quick	O
scan	O
on	O
a	O
Windows	B-Device
7	I-Device
computer	O
took	O
about	O
10	O
minutes	O
and	O
a	O
full	O
scan	O
about	O
45	O
minutes	O
.	O
</s>
<s>
Ars	O
Technica	O
reviewed	O
it	O
positively	O
,	O
citing	O
its	O
organized	O
interface	O
,	O
low	O
resource	O
usage	O
,	O
and	O
its	O
status	O
as	O
freeware	B-License
.	O
</s>
<s>
Nick	O
Mediati	O
of	O
PCWorld	O
noted	O
MSE	O
's	O
"	O
clear-cut	O
"	O
and	O
"	O
cleanly	O
designed	O
"	O
tabbed	O
user	B-Application
interface	I-Application
.	O
</s>
<s>
He	O
was	O
also	O
initially	O
confused	O
because	O
the	O
user	B-Application
interface	I-Application
failed	O
to	O
mention	O
that	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
automatically	O
updates	O
itself	O
,	O
rather	O
than	O
having	O
to	O
be	O
manually	O
updated	O
via	O
the	O
Update	O
tab	O
;	O
an	O
explanation	O
of	O
this	O
feature	O
was	O
included	O
in	O
the	O
final	O
release	O
.	O
</s>
<s>
Neil	O
Rubenking	O
of	O
PC	O
Magazine	O
successfully	O
installed	O
the	O
beta	O
version	O
on	O
12	O
malware-infected	O
systems	O
and	O
commented	O
on	O
its	O
small	O
installation	O
package	O
(	O
about	O
7	O
MB	O
,	O
depending	O
on	O
the	O
operating	B-General_Concept
system	I-General_Concept
)	O
and	O
speedy	O
installation	O
.	O
</s>
<s>
On	O
7	O
January	O
2010	O
,	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
won	O
the	O
Best	O
Free	O
Software	O
award	O
from	O
PC	O
Advisor	O
.	O
</s>
<s>
Between	O
June	O
2010	O
to	O
January	O
2013	O
,	O
AV-TEST	O
tested	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
14	O
times	O
;	O
in	O
11	O
out	O
of	O
14	O
cases	O
,	O
MSE	O
secured	O
AV-TEST	O
certification	O
of	O
outperforming	O
AV	O
industry	O
average	O
ratings	O
.	O
</s>
<s>
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
2.0	O
was	O
tested	O
and	O
certified	O
in	O
March	O
2011	O
.	O
</s>
<s>
Report	O
details	O
show	O
that	O
although	O
version	O
2.0	O
was	O
able	O
to	O
find	O
all	O
malware	O
samples	O
of	O
the	O
WildList	O
(	O
widespread	O
malware	O
)	O
,	O
it	O
was	O
not	O
able	O
to	O
stop	O
all	O
Internet-based	O
attacks	O
because	O
it	O
lacks	O
personal	B-Protocol
firewall	I-Protocol
and	O
anti-spam	O
capabilities	O
.	O
</s>
<s>
Version	O
4.0	O
for	O
Windows	B-Device
7	I-Device
SP1	O
(	O
x64	B-Device
)	O
was	O
tested	O
in	O
June	O
2012	O
and	O
achieved	O
scores	O
of	O
2.5	O
,	O
5.5	O
and	O
5.5	O
for	O
protection	O
,	O
repair	O
and	O
usability	O
.	O
</s>
<s>
In	O
October	O
2012	O
,	O
the	O
product	O
lost	O
its	O
AV-TEST	O
certification	O
when	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
4.1	O
achieved	O
scores	O
of	O
1.5	O
,	O
3.5	O
and	O
5.5	O
for	O
its	O
protection	O
,	O
repair	O
and	O
usability	O
.	O
</s>
<s>
In	O
AV-TEST	O
'	O
s	O
2011	O
annual	O
review	O
,	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
came	O
last	O
in	O
protection	O
,	O
seventh	O
in	O
repair	O
and	O
fifth	O
in	O
usability	O
.	O
</s>
<s>
John	O
Dunn	O
of	O
PCWorld	O
,	O
who	O
analyzed	O
the	O
report	O
,	O
noted	O
that	O
the	O
tendency	O
to	O
use	O
free	O
AV	B-Application
software	I-Application
is	O
something	O
new	O
:	O
"	O
After	O
all	O
,	O
free	B-Operating_System
antivirus	I-Operating_System
suites	O
have	O
been	O
around	O
for	O
years	O
but	O
have	O
tended	O
to	O
be	O
seen	O
as	O
the	O
poor	O
relations	O
to	O
paid	O
software.	O
"	O
</s>
<s>
He	O
named	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
as	O
an	O
influence	O
on	O
PC	O
users	O
to	O
adopt	O
free	O
AV	B-Application
software	I-Application
.	O
</s>
<s>
The	O
popularity	O
of	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
has	O
led	O
to	O
the	O
appearance	O
of	O
malware	O
abusing	O
its	O
name	O
.	O
</s>
<s>
In	O
February	O
2010	O
,	O
a	O
rogue	O
security	O
package	O
calling	O
itself	O
"	O
Security	B-Application
Essentials	I-Application
2010	O
"	O
appeared	O
on	O
the	O
internet	O
,	O
carrying	O
the	O
Alureon	O
virus	O
.	O
</s>
<s>
It	O
reappeared	O
in	O
November	O
2010	O
,	O
this	O
time	O
calling	O
itself	O
"	O
Security	B-Application
Essentials	I-Application
2011	O
"	O
.	O
</s>
<s>
Designated	O
Rogue:Win32/FakePAV	O
or	O
Unknown	O
Win32/Trojan	O
,	O
it	O
closely	O
resembles	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
and	O
uses	O
sophisticated	O
social	O
engineering	O
to	O
deceive	O
users	O
and	O
infect	O
their	O
systems	O
,	O
under	O
the	O
guise	O
of	O
five	O
different	O
fictional	O
anti-malware	B-Application
products	O
.	O
</s>
<s>
It	O
also	O
terminates	O
and	O
prevents	O
the	O
launch	O
of	O
156	O
different	O
programs	O
,	O
including	O
Registry	B-Protocol
Editor	I-Protocol
,	O
Windows	B-Device
Command	I-Device
Prompt	I-Device
,	O
Internet	B-Application
Explorer	I-Application
,	O
Mozilla	B-Application
Firefox	I-Application
,	O
Opera	B-Application
,	O
Safari	B-Application
,	O
and	O
Google	B-Application
Chrome	I-Application
.	O
</s>
