<s>
McAfee	B-Operating_System
VirusScan	I-Operating_System
is	O
an	O
antivirus	B-Application
software	I-Application
created	O
and	O
maintained	O
by	O
McAfee	O
(	O
formerly	O
known	O
as	O
Intel	O
Security	O
,	O
and	O
Network	O
Associates	O
prior	O
to	O
that	O
)	O
.	O
</s>
<s>
Originally	O
marketed	O
as	O
a	O
standalone	O
product	O
,	O
it	O
has	O
been	O
bundled	O
with	O
McAfee	O
LiveSafe	O
,	O
McAfee	B-Operating_System
AntiVirus	I-Operating_System
Plus	O
,	O
McAfee	O
Total	O
Protection	O
and	O
McAfee	O
Gamer	O
Security	O
since	O
2010	O
.	O
</s>
<s>
McAfee	O
LiveSafe	O
integrates	O
antivirus	B-Application
,	O
firewall	B-Application
and	O
anti-spyware/anti	O
-ransomware	O
capabilities	O
.	O
</s>
<s>
In	O
2006	O
,	O
British	O
telecom	O
company	O
BSkyB	O
started	O
offering	O
Sky	O
Broadband	O
customers	O
a	O
branded	O
version	O
of	O
VirusScan	B-Operating_System
for	O
free	O
upon	O
broadband	O
modem	O
installation	O
.	O
</s>
<s>
McAfee	O
also	O
produces	O
an	O
enterprise-level	O
product	O
named	O
VirusScan	B-Operating_System
Enterprise	O
:	O
McAfee	O
has	O
designed	O
this	O
for	O
use	O
on	O
larger	O
networks	O
designed	O
to	O
make	O
management	O
of	O
antivirus	B-Application
software	I-Application
on	O
multiple	O
computers	O
easier	O
.	O
</s>
<s>
Clients	O
can	O
be	O
controlled	O
using	O
the	O
included	O
ePolicy	O
Orchestrator	O
(	O
ePO	O
)	O
,	O
which	O
is	O
a	O
unified	O
console	O
that	O
can	O
control	O
VirusScan	B-Operating_System
and	O
other	O
McAfee	O
products	O
.	O
</s>
<s>
Support	O
for	O
VirusScan	B-Operating_System
Enterprise	O
ended	O
on	O
December	O
31	O
,	O
2021	O
.	O
</s>
<s>
In	O
November	O
2008	O
McAfee	O
announced	O
VirusScan	B-Operating_System
for	O
Mac	O
OS	O
.	O
</s>
<s>
(	O
Earlier	O
versions	O
used	O
the	O
name	O
Virex	B-Operating_System
,	O
developed	O
by	O
HJC	O
Software	O
.	O
)	O
</s>
<s>
Key	O
changes	O
in	O
VirusScan	B-Operating_System
8.6	O
included	O
Leopard	O
Compatibility	O
(	O
a	O
universal	O
binary	O
package	O
that	O
ran	O
on	O
both	O
Intel	O
and	O
PowerPC-based	O
Macs	O
)	O
,	O
On-Access	O
scanning	O
,	O
and	O
Apple	O
Mail	O
support	O
.	O
</s>
<s>
In	O
tests	O
by	O
Virus	O
Bulletin	O
and	O
additional	O
independent	O
consumer-organizations	O
,	O
McAfee	B-Operating_System
VirusScan	I-Operating_System
has	O
not	O
fared	O
well	O
,	O
frequently	O
failing	O
to	O
detect	O
some	O
common	O
viruses	O
.	O
</s>
<s>
A	O
review	O
of	O
VirusScan	B-Operating_System
2006	O
by	O
CNET	O
criticized	O
the	O
product	O
due	O
to	O
"	O
pronounced	O
performance	O
hits	O
in	O
two	O
of	O
our	O
three	O
real-world	O
performance	O
tests	O
"	O
and	O
some	O
users	O
reviewing	O
the	O
same	O
product	O
reported	O
encountering	O
technical	O
problems	O
.	O
</s>
<s>
Some	O
older	O
versions	O
of	O
the	O
VirusScan	B-Operating_System
engine	O
use	O
all	O
available	O
CPU	O
cycles	O
.	O
</s>
<s>
,	O
McAfee	O
virus-scanning	O
products	O
did	O
not	O
handle	O
false	O
positives	O
well	O
,	O
repeatedly	O
removing	O
or	O
quarantining	B-Application
known	O
clean	O
files	O
,	O
even	O
after	O
user	O
restoration	O
of	O
these	O
files	O
.	O
</s>
<s>
An	O
August	O
2012	O
update	O
to	O
McAfee	B-Operating_System
antivirus	I-Operating_System
caused	O
the	O
protection	O
to	O
become	O
turned	O
off	O
and	O
users	O
to	O
lose	O
internet	O
connections	O
.	O
</s>
