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You are viewing an outdated report published on May 1st, 2006. The latest version of this report was published on October 1st, 2014


    
Certificate Authority Market Share Report
May 1st, 2006

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.

CA April 2006
Count
April 2006
%
March 2006
Count
March 2006
%
Growth
%
Verisign74,37228.8373,88129.25-1.45
Equifax (Geotrust)51,06819.7949,39019.561.22
Thawte38,68214.9938,41015.21-1.41
Comodo Limited18,7717.2819,2867.64-4.72
Starfield Technologies, Inc.7,6032.956,9682.766.82
Unknown4,8961.904,6631.852.79
AddTrust AB4,7171.833,8111.5121.17
Entrust.net4,2011.634,0751.610.93
SomeOrganization3,0781.193,0911.22-2.51
SWsoft, Inc.2,2250.862,1590.850.89
ChainedSSL2,2100.862,1770.86-0.62
Snake Oil, Ltd2,0130.782,0010.79-1.51
The USERTRUST Network1,7660.681,7470.69-1.04
DigiCert Inc.1,7530.681,2650.5035.66
XRamp Security Services Inc1,5150.591,4710.580.83
U.S. Government1,4630.571,4620.58-2.03
Network Solutions L.L.C.1,3260.511,1080.4417.16
TC TrustCenter for Security in Data Networks GmbH8150.328050.32-0.89
IPS Certification Authority s.l.7960.317670.301.60
GlobalSign nv-sa6730.266570.260.28
Root CA6580.266400.250.65
Betrusted Japan Co.,Ltd.4360.174160.162.60
Positive Software Corporation3340.132780.1117.62
ispgateway2740.112560.104.78
FreeSSL2720.112880.11-7.54
Deutsche Telekom AG2420.092730.11-13.22
GTE Corporation2260.092230.09-0.78
Plesk, Inc.2190.082270.09-5.55
Comodo Japan Inc.1990.081810.077.63
Akamai1820.071770.070.66
TDC1730.071760.07-3.77
Kubota Systems Inc.1690.071670.07-0.93
Ipswitch,Inc.1610.061590.06-0.87
Apache HTTP Server1510.061440.062.66
Positive Software1420.061310.056.12
OCC1230.051110.048.48
Plesk Inc.1200.051200.05-2.10
Firstserver, Inc.1200.051060.0410.83
NetLock Halozatbiztonsagi Kft.1120.041100.04-0.32
Internet Widgits Pty Ltd1050.041110.04-7.39
Unizeto Sp. z o.o.1030.041050.04-3.97
ICS_TREE950.04900.043.34
RM890.03840.033.73
GlobalSign Inc890.03910.04-4.25
CRU890.03870.030.15
Digital Signature Trust Co.880.03890.04-3.20
Trusted Secure Certificate Authority870.03840.031.39
IceWarp Software860.03840.030.23
Thawte Certification840.03870.03-5.48
StartCom Ltd.810.03740.037.16
CNRS800.03780.030.41
NTT Communications Corporation770.03750.030.51
ICP-Brasil700.03690.03-0.68
CAcert Inc.690.03610.0210.74
XYZ Corporation650.03650.03-2.10
T-Systems Enterprise Services GmbH620.02390.0255.63
United Network Communications Co., Ltd.590.02590.02-2.10
MULTICERT-CA590.02570.021.33
Japan Certification Services, Inc.590.02600.02-3.73
BlueHost.Com590.02550.025.02
Equifax Secure Inc580.02570.02-0.38
Digi-Sign Limited580.02450.0226.18
Your Name Webhosting560.02510.027.50
Stunnel Developers Ltd550.02570.02-5.54
FNMT530.02540.02-3.91
WebMoney Transfer520.02510.02-0.18
TAIWAN-CA.COM510.02440.0213.47
Sun Microsystems Inc470.02430.027.01
Temp Certificate!460.02430.024.73
Hostgator440.02390.0210.45
Default Web Site430.02370.0113.77
My Company Ltd420.02440.02-6.55
University of Maryland410.02410.02-2.10
S1 Corporation410.02400.020.35
UniCERT Brasil Certificadora400.02430.02-8.93
SCNC400.02400.02-2.10
Stalker Software, Inc.390.02350.019.09
DFN-CERT Services GmbH390.02410.02-6.88
Carnegie Mellon University390.02380.020.47
SuSE Linux Web Server360.01380.02-7.25
Sonera360.01320.0110.14
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH350.01350.01-2.10
University of Washington340.01330.010.86
Secure Business Services, Inc.330.0100.00N/A
IceWarp Ltd.330.01320.010.96
CFC330.01320.010.96
Beocity330.01350.01-7.70
University of Helsinki320.01310.011.06
IT Bureau of Hainan Province320.01290.018.03
Etisalat320.01350.01-10.49
Audkenni hf.310.01290.014.65
cv. Candi Internet300.01310.01-5.26
WEBMASTERS.COM300.01300.01-2.10
Cisco Systems, Inc.300.0100.00N/A
Prvni certifikacni autorita a.s.290.01280.011.39
Massachusetts Institute of Technology290.01290.01-2.10
E-Telbank Sp. z o.o.290.0100.00N/A
CETI290.01290.01-2.10
Advanced Extranet Server290.01290.01-2.10
Webmin Software280.01300.01-8.63

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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