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 2013 Count	April 2013 %	March 2013 Count	March 2013 %	Growth %
GoDaddy.com, Inc.	276,747	20.91	278,222	21.52	-2.82
GeoTrust, Inc.	217,529	16.44	203,738	15.76	4.31
COMODO CA Limited	111,476	8.42	104,543	8.09	4.17
Verisign	92,506	6.99	92,287	7.14	-2.07
Thawte, Inc.	68,564	5.18	67,701	5.24	-1.06
DigiCert	64,495	4.87	61,838	4.78	1.89
GlobalSign nv-sa	49,331	3.73	46,825	3.62	2.92
GeoTrust Inc.	49,203	3.72	48,721	3.77	-1.34
Unknown	34,132	2.58	33,721	2.61	-1.12
Starfield Technologies, Inc.	26,219	1.98	25,642	1.98	-0.11
CAcert Inc.	26,062	1.97	24,048	1.86	5.88
Network Solutions L.L.C.	25,631	1.94	25,899	2.00	-3.32
Equifax (Geotrust)	21,770	1.65	22,489	1.74	-5.43
Comodo Limited	17,678	1.34	18,815	1.46	-8.21
Entrust, Inc.	16,802	1.27	16,285	1.26	0.79
StartCom Ltd.	14,870	1.12	14,246	1.10	1.97
Comodo CA Limited	14,437	1.09	14,781	1.14	-4.58
TERENA	13,814	1.04	13,471	1.04	0.18
AlphaSSL	13,122	0.99	12,506	0.97	2.51
Internet2	10,719	0.81	10,095	0.78	3.73
Cybertrust Inc	8,365	0.63	6,263	0.48	30.48
Parallels	7,394	0.56	7,012	0.54	3.02
Volusion, Inc.	6,351	0.48	6,354	0.49	-2.35
SecureTrust Corporation	6,301	0.48	6,724	0.52	-8.45
SomeOrganization	5,606	0.42	5,520	0.43	-0.78
GeoTrust Inc	5,517	0.42	5,259	0.41	2.49
GlobalSign	4,966	0.38	5,604	0.43	-13.43
Thawte	4,901	0.37	5,362	0.41	-10.71
Cybertrust Japan Co., Ltd.	4,127	0.31	4,106	0.32	-1.81
Trustwave Holdings, Inc.	3,667	0.28	3,374	0.26	6.18
SECOM Trust Systems CO.,LTD.	3,431	0.26	3,340	0.26	0.36
Unizeto Technologies S.A.	3,015	0.23	2,907	0.22	1.32
thawte, Inc.	2,991	0.23	2,935	0.23	-0.44
Google Inc	2,891	0.22	2,837	0.22	-0.45
Servision Inc.	2,248	0.17	2,219	0.17	-1.03
GANDI SAS	1,905	0.14	1,804	0.14	3.16
Root CA	1,895	0.14	1,894	0.15	-2.25
Alpha	1,854	0.14	1,866	0.14	-2.93
GTE Corporation	1,688	0.13	1,678	0.13	-1.72
QuoVadis Limited	1,544	0.12	1,500	0.12	0.56
U.S. Government	1,454	0.11	1,466	0.11	-3.11
ispgateway	1,433	0.11	1,405	0.11	-0.36
none	1,432	0.11	1,423	0.11	-1.69
Trusted Secure Certificate Authority	1,347	0.10	1,324	0.10	-0.61
Register.com	1,264	0.10	1,264	0.10	-2.31
Globe Hosting, Inc.	1,102	0.08	1,066	0.08	0.99
Government of Korea	1,085	0.08	1,036	0.08	2.31
SWsoft, Inc.	1,071	0.08	1,131	0.09	-7.49
T-Systems International GmbH	1,023	0.08	1,018	0.08	-1.83
UIC	1,015	0.08	0	0.00	N/A
TC TrustCenter GmbH	1,014	0.08	1,046	0.08	-5.30
National Institute of Informatics	975	0.07	949	0.07	0.37
AusCERT	945	0.07	926	0.07	-0.30
Autistici/Inventati	933	0.07	906	0.07	0.60
EUNETIC GmbH	883	0.07	856	0.07	0.77
Parallels, Inc.	741	0.06	737	0.06	-1.78
ips Certification Authority	725	0.05	737	0.06	-3.90
Snake Oil, Ltd	692	0.05	721	0.06	-6.24
TAIWAN-CA INC.	630	0.05	613	0.05	0.40
FNMT	480	0.04	469	0.04	-0.02
Firstserver, Inc	474	0.04	473	0.04	-2.10
Internet Widgits Pty Ltd	456	0.03	443	0.03	0.56
NetLock Kft.	441	0.03	421	0.03	2.33
CrossTrust	435	0.03	434	0.03	-2.08
RBC Hosting Center	426	0.03	441	0.03	-5.63
OCC	421	0.03	422	0.03	-2.54
TBS INTERNET	418	0.03	418	0.03	-2.31
ICP-Brasil	416	0.03	421	0.03	-3.47
WTF ALFA	415	0.03	412	0.03	-1.60
SECOM Trust.net	407	0.03	490	0.04	-18.85
Zimbra Collaboration Suite	383	0.03	394	0.03	-5.03
Apache HTTP Server	359	0.03	358	0.03	-2.03
OVH SAS	343	0.03	367	0.03	-8.70
SwissSign AG	341	0.03	335	0.03	-0.56
Getronics Nederland BV	322	0.02	320	0.02	-1.70
OptimumSSL CA	318	0.02	316	0.02	-1.69
XX	316	0.02	306	0.02	0.89
KAGOYA JAPAN Inc.	307	0.02	290	0.02	3.42
NetLock Halozatbiztonsagi Kft.	299	0.02	312	0.02	-6.38
Generalitat Valenciana	287	0.02	267	0.02	5.01
HTTPS Management Certificate for SonicWALL (self-signed)	279	0.02	265	0.02	2.85
InterWorx	270	0.02	222	0.02	18.82
SGssl	263	0.02	246	0.02	4.44
Ministere education nationale (MENESR)	258	0.02	254	0.02	-0.77
Trend Micro Inc	252	0.02	234	0.02	5.21
SonicWALL, Inc.	251	0.02	259	0.02	-5.32
DOMENY.PL Ltd.	231	0.02	211	0.02	6.95
Agencia Catalana de Certificacio (NIF Q-0801176-I)	226	0.02	219	0.02	0.82
WebSpace-Forum, Thomas Wendt	224	0.02	223	0.02	-1.87
Wells Fargo	213	0.02	214	0.02	-2.76
Dotname Korea Corp.	205	0.02	205	0.02	-2.31
Secure Business Services, Inc.	201	0.02	211	0.02	-6.94
TrustSign Certificadora Digital	197	0.01	188	0.01	2.37
Digi-Sign Limited	195	0.01	193	0.01	-1.29
Positive Software	188	0.01	192	0.01	-4.34
My Company Ltd	187	0.01	183	0.01	-0.17
PVE Cluster Manager CA	176	0.01	0	0.00	N/A
Sonera	174	0.01	177	0.01	-3.96
Universitaet Stuttgart	172	0.01	172	0.01	-2.31
DREAMHOST CERTIFICATION AUTHORITY	171	0.01	171	0.01	-2.31

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.