This report provides market share data for antivirus software, Windows operating systems, and backup client software from August 16, 2010 to November 15, 2010. The top three antivirus vendors worldwide were Avast with 17.53% market share, ESET with 12.05%, and Symantec with 10.04%. In North America, Symantec maintained the top position with 16.45% market share. Windows 7 continued growing in adoption, reaching 28.64% of the worldwide Windows market. Nearly 75% of users with backup clients backed up their data weekly or more frequently. Norton had the largest market share of backup client vendors at 26.49%.

1. Security Industry Market Share Analysis
December 2010
Introduction The Research
OPSWAT releases quarterly market share reports for several Data was collected from a sample of the estimated 100
sectors of the security industry. This quarter’s report million endpoints that employ the OESIS Framework.
includes both worldwide and North American market share OPSWAT analyzed almost ninety thousand opt-in reports
and usage data for antivirus so ware and Windows that were submi ed between August 16 2010 and November
Operating Systems, and for the first time, worldwide data for 15 2010.
backup client so ware. The data used was collected
between August 16 2010 – November 15 2010. Data for this report was collected using the detection
capabilities of the OESIS Framework as well as by searching
for common applications in the OS registry on endpoints.
Antivirus vendors and Backup Clients looking for inclusion in
About OPSWAT the OESIS Framework are encouraged to contact
Founded in 2002, OPSWAT provides so ware engineers and marketing@opswat.com to partner with OPSWAT through
IT professionals with development tools and data services to the OESIS OK Certification Program and ensure that they are
power manageability and security solutions. The company’s fully supported.
primary product, OESIS Framework, is a manageability
solution licensed by major technology companies like Cisco Parties interested in hosting this report are free to do so as
Systems, Juniper Networks, F5 Networks, Microso , HP and long as credit is given to OPSWAT, Inc. and a link is provided
many others. Having been adopted as the industry standard to www.oesisok.com.
so ware development toolkit (SDK) for creating compliance
and manageability applications, the framework’s application
libraries have now been deployed on over fi y million
endpoint systems worldwide. To learn more about OESIS,
please visit the product page at
www.opswat.com/products/oesis-frameworkae.

2. Worldwide Antivirus Vendor Market Share
The avast! Antivirus product line has helped AVAST So ware WORLDWIDE AVAST SOFTWARE
ESET SOFTWARE
.
.
maintain the title of number one antivirus vendor worldwide
DECEMBER SYMANTEC CORP. .
with 17.53% global market share. ESET So ware and AVG TECHNOLOGIES .
Symantec round out the top three in global market share KASPERSKY LABS .
with 12.05% and 10.04% respectively. When comparing to AVIRA GMBH .
MICROSOFT CORP. .
the worldwide data reported in our June 2010 report, we
PANDA SECURITY .
show that ESET has the largest gain in market share with an MCAFEE INC. .
increase of 6.39%. Other notable increases shown since June PC TOOLS SOFTWARE .
are Kaspersky, with a 2.46% increase in market share, and TREND MICRO, INC. .
COMODO GROUP .
Panda So ware, with a climb of 2.50% in global market
F-SECURE CORP. .
share. EMSI SOFTWARE GMBH .
SOFTWIN .
OTHERS .
AVAST
MCAFEE
PANDA ESET
DECEMBER VS. JUNE
MICROSOFT
—
DECEMBER SYMANTEC
— JUNE AVIRA
— AVG
KASPERSKY
—
—
—
—
—
—
—
—
T
ET
T
Y
C
G
RA
A
EE
LS
RO
O
E
E
IN
S
AS
OF
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AV
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M
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SP
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S
PC
D
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IC
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EN
SY
KA
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TR
SI
EM

3. N. America Antivirus Vendor Market Share
With Symantec’s vast Norton product line and effective
NORTH AMERICA SYMANTEC CORP.
AVAST SOFTWARE
.
.
distribution channels, they have maintained their position
DECEMBER ESET SOFTWARE .
from our September 2010 report as the top antivirus vendor MICROSOFT CORP. .
in North America, holding a 16.45% share of the market AVG TECHNOLOGIES .
despite a slight decrease from the 16.67% share shown in MCAFEE INC. .
PANDA SECURITY .
September. Meanwhile, ESET and Microso have both
PC TOOLS SOFTWARE .
shown strong gains climbing to 10.86% and 10.39% KASPERSKY LABS .
respectively in market share. McAfee also showed a rise AVIRA GMBH .
since September with a 1.16% increase in North American TREND MICRO, INC. .
CA TECHNOLOGIES .
Market Share.
SUNBELT SOFTWARE .
WEBROOT SOFTWARE INC. .
COMODO GROUP .
OTHERS .
SYMANTEC
KASPERSKY
PC TOOLS AVAST
DECEMBER VS. SEPTEMBER
PANDA
DECEMBER ESET
MCAFEE
— SEPTEMBER
— MICROSOFT
AVG
—
—
—
—
—
—
—
—
T
ET
T
LT
OT
NT
Y
C
G
EE
DA
LS
RA
O
CA
O
S
AS
OF
ER
TE
SK
AV
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OD
E
ES
O
F
RO
OI
I
AN
IC
AV
NB
AV
CA
AN
OS
H
TO
ER
M
KP
M
OT
EB
P-
SU
CO
M
PC
SP
R
M
D
EC
IC
W
EN
SY
KA
CH
M
TR

4. Antivirus Product Market Share
Microso ’s Security Essentials Antivirus leads the North Conclusion
American Market for individual products with 10% market In North America, fi y-three different antivirus companies
share, a 2.5% increase since our September 2010 report. were detected in this report. Of those fi y-three, five
“Free” antivirus solutions also accounted for 3 of the top 4 companies combined to control 60.74% of the antivirus
antivirus products detected globally, as avast! Free Antivirus, market. While Symantec still controls a large part of the
Microso Security Essentials, and AVG Anti-Virus Free were market, trends are moving away from paid antivirus so ware
all available as free downloads. and towards free antivirus solutions such as those from
Microso , AVG, and AVAST So ware. Our current data
shows that 58% of respondents were using a free solution,
NORTH AMERICA confirming our trend noted above when compared to a 42%
DECEMBER free solution share as shown in our June 2010 report.
When looking at worldwide data, the top three vendors are
A MICROSOFT SECURITY ESSENTIALS (ANTIVIRUS) .
AVAST, ESET, and Symantec, together controlling nearly
B AVAST ! FREE ANTIVIRUS .
C ESET NOD ANTIVIRUS . 40% of the market. The same three vendors also control
D AVG ANTIVIRUS FREE . more than 40% of the North American market, with
E NORTON ANTIVIRUS . Symantec leading the way with 16.45% market share.
F MCAFFEE VIRUSSCAN .
Of the ninety thousand reports that were submi ed
G NORTON .
H PC TOOLS INTERNET SECURITY (ANTIVIRUS) . worldwide, only 60% of those reports detected having any
I PANDA CLOUD ANTIVIRUS . antivirus application installed.
J SYMANTEC ANTIVIRUS .
K AVIRA ANTIVIR PERSONAL - FREE ANTIVIRUS .
L ESET SMART SECURITY .
M SYMANTEC ENDPOINT PROTECTION .
N MCAFEE VIRUSSCAN ENTERPRISE .
O KASPERSKY INTERNET SECURITY .
P OTHERS .
P
A
B
C
D
O
N E
M
L F
K G
J I H

5. Antivirus Product Market Share
WORLDWIDE
DECEMBER
A AVAST ! FREE ANTIVIRUS .
B MICROSOFT SECURITY ESSENTIALS (ANTIVIRUS) .
C ESET NOD ANTIVIRUS .
D AVIRA ANTIVIR PERSONAL - FREE ANTIVIRUS .
E AVG ANTIVIRUS FREE .
F KASPERSKY INTERNET SECURITY .
G NORTON ANTIVIRUS .
H ESET SMART SECURITY .
I MCAFEE VIRUSSCAN .
J PANDA CLOUD ANTIVIRUS .
K AVAST! ANTIVIRUS PROFESSIONAL .
L AVG .
M KASPERSKY ANTIVIRUS .
N AVG .
O AVAST! ANTIVIRUS .
P MCAFEE VIRUSSCAN ENTERPRISE .
Q SYMANTEC ANTIVIRUS .
R NORTON .
S PC TOOLS SPYWARE DOCTOR .
T SYMANTEC ENDPOINT PTOTECTION .
U PANDA ACTIVESCAN . .
V NOD ANTIVIRUS SYSTEM .
W AVAST! INTERNET SECURITY .
X NOERTON INTERNET SECURITY .
Y EMSISOFT ANTIMALWARE .
Z OTHERS .
Z
A
B
Y
X
W
V
U C
T
S
R
Q
P D
O
N
M E
L
K F
J
I H G

6. Windows Operating System Deployments
NORTH AMERICA WINDOWS XP
WINDOWS
.
.
WORLDWIDE WINDOWS XP
WINDOWS
.
.
DECEMBER WINDOWS VISTA . DECEMBER WINDOWS VISTA .
OTHERS < . OTHERS <
VISTA
VISTA
XP XP
Our North American data shows the trend that users are Windows 7 continues to grow globally as well, jumping up
gradually moving away from Windows XP and moving 6.97% to 28.64% of the Windows Operating System’s
towards Windows 7. While Windows XP and Windows Vista worldwide market share. Meanwhile, Windows Vista dropped
have declined in market share, Windows 7 has increased by in global market share with just 14.75% since our June 2010
almost 6%. report, which showed a 15.8% market share.
DECEMBER DECEMBER
SEPTEMBER JUNE
— —
— —
— —
— —
— —
— —
— —
XP VISTA OTHERS XP VISTA OTHERS

7. Backup Client Adoption Backup Client Market Share
Backup Clients are becoming more and more popular as the Of the top 17 backup client vendors OPSWAT was able to
importance of securing data increases. A er analyzing detect globally, Norton claimed the most market share with
worldwide backup client usage data, we were able to detect 26.49%. Rounding out the top 3 in backup client market
that nearly 47.83% of users with an installed backup client, share are McAfee 10.58% and Dropbox 10.41%.
backed up their data within one day. Of those we could
detect, there were 26.09% of users who backed up their data
between 1 day and 1 week. This data shows us that almost BACK-UP NORTON
MCAFEE
.
.
75% of all users with backup clients are using them weekly,
DECEMBER DROPBOX .
with nearly 82% of all users backing up their data at least AVIRA .
monthly. This data was taken from a sample of reports LENOVO .
received that used backup clients by Carbonite, Panda, SYNCBACK .
CARBONITE .
Bullguard, Soonr, Avanquest and Mozy.
SYNCTOY .
PANDA .
MACRIUM REFLECT .
BACK-UP USAGE COBIAN .
DECEMBER MOZY .
WEBROOT SOFTWARE .
LESS THAN DAY . COMODO .
- DAYS . ACRONIS .
WEEK - MONTH . GENIE-SOFT .
MONTH - MONTHS . SOONR .
MONTHS - YEAR . OTHERS .
MORE THAN YEAR .
MONTH -
MONTHS
WEEK-
DAILY
MONTH
NORTON
- DAYS
PANDA
SYNCTOY
Conclusion
Companies that offer all-inclusive security packages which
CARBONITE
include backup clients, such as Norton and McAfee, are at the
MCAFEE
top of the charts when it comes to market share. Their
SYNCBACK
bundled, as well as standalone backup clients, help them
control the backup client market. The most prominent
LENOVO
example of a standalone backup client is Dropbox, who holds DROPBOX
the third largest market share at 10.37%. This shows that AVIRA
standalone backup clients can still compete with all-inclusive
security suites.

8. Contact and Reproduction Information
Please contact sales@opswat.com for more information on MD4M
the OESIS Framework.
MetaDefender for Media (MD4M) is the ideal solution to
protect your organization from risks associated with
Parties interested in hosting this report are free to do so as
infected media present on peripheral devices such as USB
long as credit is given to OPSWAT, Inc. and a link is provided
drives and CDs/DVDs. MD4M scans your media using up to
to www.oesisok.com.
nine licensed antivirus engines simultaneously, enhancing
content security with multi-scanning technology.
About OPSWAT
Founded in 2002, OPSWAT is the industry leader in so ware OESIS OK
management SDKs, interoperability certification and OESIS OK is the certification program that verifies the
multiple-engine scanning solutions. With both so ware interoperability of endpoint security applications with
manageability and multi-scanning products, OPSWAT offers leading network and technology solutions such as Citrix.
simplified and comprehensive SDKs that reduce time and Application types cover a range including antivirus to VPN
costs for your engineering and testing teams. clients. Additional information is available at:
www.oesisok.com
Products AppRemover
The free AppRemover utility enables the thorough
OESIS uninstallation of security applications like antivirus and
OESIS Framework is a cross platform, open development antispyware from your computer. AppRemover is available
framework that enables so ware engineers and technology for commercial licensing if you wish to deploy multiple copies
vendors to develop products that detect, classify and of AppRemover within an organization or entity, or if you
manage thousands of third-party so ware applications. wish to bundle AppRemover with hardware, so ware or
OESIS is perfect for SSL VPN, network access control (NAC) other services.
and other manageability solutions, and is deployed on an
estimated 100 million endpoints worldwide
Metascan
Metascan enables IT professionals and so ware engineers
to enhance network security by integrating multi-scanning
technology into their proprietary solutions. Metascan
includes licenses for multiple built-in antivirus engines from
market leaders such as CA, ESET, AVG and others, and allows
for integration with other engines of your choice if needed.
Using multiple engines significantly improves the likelihood
of detecting malware, as your solution will be secure if any of © 2010 OPSWAT Inc. AllRights Reserved.
the included engines detects the threat. An online demo built OPSWAT, OESIS, OESIS OK, Metascan, MetaDefender, AppRemover and the
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