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Certificate Authority Market Share Report
June 1st, 2003

Report Description
This report, much like our original certs and CAs report, focuses on issuers of SSL enabling certificates found on web servers. Unlike our original report, however, this report has a couple of key differences to it:

  • Reports on top 100 CAs. The original report only paid attention to the major CAs at the time the report was produced. This report lists the top 100 CAs for the month. You will find here many self-signing organizations such as universities, telecommunications firms, etc.
  • Uses issuer name as identifier. Our original report only counted a certificate towards an organization if we were able to prove, by virtue of verifying the key, that the organization in question actually signed the certificate. This had a notable problem with it - we don't always have the public key of the CA. In at least one case, a CA doesn't make their public key available unless you sign a license agreement.

    This report doesn't have that problem, since it only uses the issuer Organization Name to uniquely identify the issuing CA.

3501256 Canada Inc. CA Certificate Historical Market Share Graph

CA May 2003
Count
May 2003
%
April 2003
Count
April 2003
%
Growth
%
Verisign55,70841.3451,70241.020.78
Thawte32,61124.2031,54625.03-3.31
Equifax (Geotrust)17,07912.6715,25912.114.69
Unknown4,0853.033,9823.16-4.05
Comodo Limited3,7212.762,5202.0038.11
Snake Oil, Ltd2,0841.551,9151.521.79
SomeOrganization1,5341.141,4471.15-0.84
U.S. Government9910.749780.78-5.23
Entrust.net8940.668640.69-3.22
Plesk Inc.5580.416100.48-14.44
The USERTRUST Network4970.374480.363.76
Plesk, Inc.3160.232400.1923.15
Equifax Secure Inc3070.236600.52-56.49
TC TrustCenter for Security in Data Networks GmbH2710.202490.201.80
GlobalSign nv-sa1950.141910.15-4.51
Ipswitch,Inc.1520.111300.109.36
GTE Corporation1500.111510.12-7.09
Thawte Certification1360.101370.11-7.15
Deutsche Telekom AG1310.101200.102.11
FreeSSL1290.10650.0585.62
Kubota Systems Inc.990.071000.08-7.40
Advanced Extranet Server960.071080.09-16.86
ispgateway890.07860.07-3.21
Internet Widgits Pty Ltd790.06930.07-20.55
*.ceti.pl580.04580.05-6.47
PKI Partner AB510.04520.04-8.27
CyberTrust Japan, Inc.490.04540.04-15.13
Beocity420.03420.03-6.47
Ensim Corporation410.03430.03-10.82
Webmin Software390.03390.03-6.47
TAIWAN-CA.COM Inc.370.03370.03-6.47
University of Florida360.03360.03-6.47
SOGO KEIBI HOSHO CO.LTD360.03300.0212.24
Esat Net360.03400.03-15.82
Unizeto Sp. z o.o.350.03330.03-0.80
NetLock Halozatbiztonsagi Kft.350.03310.025.60
NeoNova B.V.350.03360.03-9.07
community musician340.03250.0227.20
SCNC340.03340.03-6.47
Positive Software330.02240.0228.61
WebMoney Transfer320.02310.02-3.45
Tele Danmark310.02300.02-3.35
XYZ Corporation300.02280.020.21
Baltimore Technologies Japan Co.,Ltd.300.02240.0216.91
media3290.02300.02-9.59
Franke & Partner290.02290.02-6.47
Stalker Software, Inc.260.02250.02-2.73
IceWarp Software260.02240.021.33
HJ.NET260.02260.02-6.47
Onyx Internet250.02250.02-6.47
Advantagecom Networks, Inc.250.02260.02-10.07
zNET Internet Services220.02400.03-48.56
Massachusetts Institute of Technology220.02230.02-10.53
MDM iNet, LLC220.02260.02-20.86
KICA220.02220.02-6.47
ROOT210.02180.019.12
Your Organization200.01260.02-28.05
University of Maryland200.01200.02-6.47
DeZines Web Hosting200.01200.02-6.47
Sun Microsystems Inc190.01190.02-6.47
Rutgers University190.01190.02-6.47
Temp Certificate!180.01140.0120.25
Technische Universitaet Chemnitz180.01170.01-0.97
Stargate.Net, Inc.180.0100.00N/A
BSG180.01190.02-11.39
NIH170.01150.016.00
KMD170.01160.01-0.62
HAL interactive, d.o.o.170.01170.01-6.47
CNRS170.01160.01-0.62
Web Hosting160.01160.01-6.47
University of Helsinki160.01160.01-6.47
Sun Cobalt160.01130.0115.12
OCC160.01120.0124.71
Logacont AG160.01170.01-11.97
Linux Test Server160.0100.00N/A
Indra's Net, Inc.160.01160.01-6.47
Carnegie Mellon University160.01200.02-25.17
Aaex Corp.160.01120.0124.71
UUNET UK150.01180.01-22.06
HDE150.01150.01-6.47
UNESP140.01130.010.73
ServeLinux Networks, Inc.140.01140.01-6.47
PVT a.s.140.01120.019.12
INFN140.01140.01-6.47
ICS_TREE140.01130.010.73
ICP-Brasil140.01130.010.73
FNMT140.01120.019.12
Apache HTTP Server140.01140.01-6.47
University of Wisconsin - Stevens Point (UWSP)130.01130.01-6.47
UniCERT Brasil130.01140.01-13.15
Radio Data Group Inc130.01130.01-6.47
RBC130.01110.0110.54
3501256 Canada Inc.130.0100.00N/A
WebEstates Inc.120.01110.012.03
Postecom s.p.a.120.01140.01-19.83
Kasetsart University120.01130.01-13.66
Etisalat120.01120.01-6.47
Dummy certificate120.01120.01-6.47
University of Bristol110.0100.00N/A
Swiss-Web GmbH110.0100.00N/A

Note: Readers are cautioned that the Growth percentages are based on a CA's market share penetration rather than the absolute number of certificates we detected. Thus, it is possible for the number of certificates to increase, while the growth is actually a negative value.



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