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	May 2012 Count	May 2012 %	April 2012 Count	April 2012 %	Growth %
GoDaddy.com, Inc.	238,517	22.33	227,055	21.90	1.97
GeoTrust, Inc.	132,809	12.44	126,273	12.18	2.09
Verisign	91,059	8.53	90,828	8.76	-2.68
Thawte, Inc.	58,944	5.52	56,676	5.47	0.95
COMODO CA Limited	55,216	5.17	51,174	4.94	4.74
DigiCert	45,667	4.28	43,437	4.19	2.05
GeoTrust Inc.	41,747	3.91	40,522	3.91	0.00
Equifax (Geotrust)	41,457	3.88	44,329	4.28	-9.22
Unknown	29,324	2.75	28,684	2.77	-0.77
GlobalSign nv-sa	28,047	2.63	26,520	2.56	2.66
Comodo CA Limited	27,920	2.61	28,155	2.72	-3.74
Comodo Limited	27,535	2.58	27,926	2.69	-4.29
Network Solutions L.L.C.	22,126	2.07	21,623	2.09	-0.67
Starfield Technologies, Inc.	19,900	1.86	19,258	1.86	0.30
GlobalSign	14,013	1.31	14,518	1.40	-6.31
Entrust, Inc.	13,786	1.29	13,473	1.30	-0.68
Thawte	11,065	1.04	12,575	1.21	-14.59
TERENA	10,437	0.98	9,942	0.96	1.90
SecureTrust Corporation	9,089	0.85	9,062	0.87	-2.64
StartCom Ltd.	8,954	0.84	8,502	0.82	2.23
AlphaSSL	6,907	0.65	6,076	0.59	10.34
Internet2	5,943	0.56	5,486	0.53	5.16
CAcert Inc.	5,837	0.55	4,787	0.46	18.36
Parallels	5,448	0.51	5,241	0.51	0.90
SomeOrganization	5,005	0.47	4,952	0.48	-1.89
Akamai Technologies Inc	4,996	0.47	4,775	0.46	1.56
Volusion, Inc.	3,981	0.37	3,643	0.35	6.08
Cybertrust Japan Co., Ltd.	3,774	0.35	3,668	0.35	-0.13
GeoTrust Inc	3,512	0.33	3,340	0.32	2.07
SECOM Trust Systems CO.,LTD.	2,880	0.27	2,866	0.28	-2.46
thawte, Inc.	2,483	0.23	2,389	0.23	0.89
Alpha	2,478	0.23	2,867	0.28	-16.10
Unizeto Technologies S.A.	2,265	0.21	2,195	0.21	0.16
Google Inc	2,095	0.20	1,960	0.19	3.75
Servision Inc.	1,973	0.18	1,931	0.19	-0.82
Root CA	1,868	0.17	1,851	0.18	-2.04
SWsoft, Inc.	1,686	0.16	1,737	0.17	-5.78
GTE Corporation	1,463	0.14	1,437	0.14	-1.17
U.S. Government	1,431	0.13	1,410	0.14	-1.49
Cybertrust Inc	1,349	0.13	1,308	0.13	0.11
QuoVadis Limited	1,273	0.12	1,230	0.12	0.46
TC TrustCenter GmbH	1,190	0.11	1,215	0.12	-4.93
ispgateway	1,148	0.11	1,133	0.11	-1.65
GANDI SAS	1,147	0.11	1,078	0.10	3.28
Register.com	1,096	0.10	1,083	0.10	-1.77
none	1,048	0.10	1,010	0.10	0.72
Trusted Secure Certificate Authority	1,041	0.10	1,022	0.10	-1.13
UIC	965	0.09	952	0.09	-1.61
SECOM Trust.net	919	0.09	934	0.09	-4.49
Snake Oil, Ltd	884	0.08	902	0.09	-4.87
T-Systems International GmbH	874	0.08	848	0.08	0.05
Government of Korea	822	0.08	763	0.07	4.57
National Institute of Informatics	752	0.07	708	0.07	3.10
AusCERT	748	0.07	715	0.07	1.55
EUNETIC GmbH	737	0.07	727	0.07	-1.60
ips Certification Authority	728	0.07	768	0.07	-7.99
Autistici/Inventati	720	0.07	672	0.06	4.00
Globe Hosting, Inc.	678	0.06	644	0.06	2.19
OVH SAS	667	0.06	652	0.06	-0.70
Parallels, Inc.	605	0.06	591	0.06	-0.63
SYS-CON Media	599	0.06	597	0.06	-2.61
Trustwave Holdings, Inc.	497	0.05	377	0.04	27.97
NetLock Halozatbiztonsagi Kft.	476	0.04	492	0.05	-6.09
Firstserver, Inc	461	0.04	457	0.04	-2.08
Cybertrust	460	0.04	546	0.05	-18.22
TAIWAN-CA INC.	404	0.04	378	0.04	3.75
OCC	403	0.04	396	0.04	-1.22
FNMT	402	0.04	400	0.04	-2.45
Betrusted Japan Co., Ltd.	401	0.04	433	0.04	-10.10
CrossTrust	392	0.04	384	0.04	-0.91
Internet Widgits Pty Ltd	377	0.04	374	0.04	-2.15
ICP-Brasil	370	0.03	355	0.03	1.17
WTF ALFA	369	0.03	363	0.04	-1.33
RBC Hosting Center	367	0.03	349	0.03	2.08
Zimbra Collaboration Suite	364	0.03	352	0.03	0.38
TBS INTERNET	352	0.03	351	0.03	-2.65
Secure Business Services, Inc.	351	0.03	373	0.04	-8.66
WebSpace-Forum, Thomas Wendt	331	0.03	327	0.03	-1.74
Apache HTTP Server	331	0.03	325	0.03	-1.14
OptimumSSL CA	297	0.03	293	0.03	-1.61
SonicWALL, Inc.	269	0.03	260	0.03	0.43
Sonera	265	0.02	283	0.03	-9.11
XX	258	0.02	268	0.03	-6.55
Getronics Nederland BV	255	0.02	246	0.02	0.62
SwissSign AG	241	0.02	228	0.02	2.60
TDC	226	0.02	228	0.02	-3.78
InterWorx	222	0.02	209	0.02	3.11
Ministere education nationale (MENESR)	213	0.02	203	0.02	1.85
SiteGround LLC.	209	0.02	183	0.02	10.86
KAGOYA JAPAN Inc.	196	0.02	184	0.02	3.40
Digi-Sign Limited	187	0.02	186	0.02	-2.41
SGssl	186	0.02	176	0.02	2.58
Agencia Catalana de Certificacio (NIF Q-0801176-I)	185	0.02	173	0.02	3.80
HTTPS Management Certificate for SonicWALL (self-signed)	172	0.02	168	0.02	-0.62
TAIWAN-CA.COM Inc.	171	0.02	176	0.02	-5.69
Wells Fargo	170	0.02	170	0.02	-2.93
My Company Ltd	163	0.02	160	0.02	-1.11
MULTICERT-CA	157	0.01	156	0.02	-2.31
Generalitat Valenciana	157	0.01	0	0.00	N/A
Positive Software	156	0.01	155	0.01	-2.30

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.