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 2013 Count	May 2013 %	April 2013 Count	April 2013 %	Growth %
GoDaddy.com, Inc.	282,692	20.81	276,747	20.91	-0.48
GeoTrust, Inc.	225,269	16.58	217,529	16.44	0.89
COMODO CA Limited	117,455	8.65	111,476	8.42	2.65
Verisign	92,992	6.85	92,506	6.99	-2.06
Thawte, Inc.	70,084	5.16	68,564	5.18	-0.41
DigiCert	66,922	4.93	64,495	4.87	1.09
GlobalSign nv-sa	50,973	3.75	49,331	3.73	0.67
GeoTrust Inc.	50,199	3.70	49,203	3.72	-0.60
Unknown	34,917	2.57	34,132	2.58	-0.33
CAcert Inc.	28,228	2.08	26,062	1.97	5.52
Starfield Technologies, Inc.	26,911	1.98	26,219	1.98	-0.00
Network Solutions L.L.C.	25,738	1.89	25,631	1.94	-2.17
Equifax (Geotrust)	21,776	1.60	21,770	1.65	-2.55
Comodo Limited	17,503	1.29	17,678	1.34	-3.54
Entrust, Inc.	17,169	1.26	16,802	1.27	-0.44
StartCom Ltd.	15,619	1.15	14,870	1.12	2.33
Comodo CA Limited	14,164	1.04	14,437	1.09	-4.41
TERENA	14,056	1.03	13,814	1.04	-0.87
AlphaSSL	13,845	1.02	13,122	0.99	2.80
Internet2	11,113	0.82	10,719	0.81	1.01
Cybertrust Inc	8,623	0.63	8,365	0.63	0.43
Parallels	7,584	0.56	7,394	0.56	-0.07
Volusion, Inc.	6,418	0.47	6,351	0.48	-1.54
SecureTrust Corporation	6,185	0.46	6,301	0.48	-4.37
GeoTrust Inc	5,718	0.42	5,517	0.42	0.98
SomeOrganization	5,662	0.42	5,606	0.42	-1.60
GlobalSign	4,940	0.36	4,966	0.38	-3.08
Thawte	4,647	0.34	4,901	0.37	-7.62
Cybertrust Japan Co., Ltd.	4,192	0.31	4,127	0.31	-1.04
Trustwave Holdings, Inc.	3,882	0.29	3,667	0.28	3.14
SECOM Trust Systems CO.,LTD.	3,501	0.26	3,431	0.26	-0.58
Unizeto Technologies S.A.	3,134	0.23	3,015	0.23	1.27
thawte, Inc.	3,041	0.22	2,991	0.23	-0.94
Google Inc	3,004	0.22	2,891	0.22	1.24
Servision Inc.	2,273	0.17	2,248	0.17	-1.49
GANDI SAS	2,018	0.15	1,905	0.14	3.21
Root CA	1,910	0.14	1,895	0.14	-1.80
Alpha	1,856	0.14	1,854	0.14	-2.47
GTE Corporation	1,726	0.13	1,688	0.13	-0.38
QuoVadis Limited	1,577	0.12	1,544	0.12	-0.49
none	1,489	0.11	1,432	0.11	1.31
U.S. Government	1,474	0.11	1,454	0.11	-1.23
ispgateway	1,467	0.11	1,433	0.11	-0.26
Trusted Secure Certificate Authority	1,366	0.10	1,347	0.10	-1.20
Register.com	1,282	0.09	1,264	0.10	-1.19
Globe Hosting, Inc.	1,162	0.09	1,102	0.08	2.73
Government of Korea	1,143	0.08	1,085	0.08	2.64
SWsoft, Inc.	1,044	0.08	1,071	0.08	-5.03
T-Systems International GmbH	1,041	0.08	1,023	0.08	-0.86
UIC	1,022	0.08	1,015	0.08	-1.90
TC TrustCenter GmbH	1,008	0.07	1,014	0.08	-3.15
National Institute of Informatics	1,003	0.07	975	0.07	0.23
AusCERT	956	0.07	945	0.07	-1.44
Autistici/Inventati	951	0.07	933	0.07	-0.69
EUNETIC GmbH	910	0.07	883	0.07	0.41
ips Certification Authority	751	0.06	725	0.05	0.92
Parallels, Inc.	750	0.06	741	0.06	-1.39
Snake Oil, Ltd	696	0.05	692	0.05	-2.01
TAIWAN-CA INC.	651	0.05	630	0.05	0.67
FNMT	496	0.04	480	0.04	0.67
Firstserver, Inc	479	0.04	474	0.04	-1.54
NetLock Kft.	456	0.03	441	0.03	0.74
Internet Widgits Pty Ltd	444	0.03	456	0.03	-5.14
ICP-Brasil	441	0.03	416	0.03	3.28
CrossTrust	439	0.03	435	0.03	-1.68
RBC Hosting Center	424	0.03	426	0.03	-3.03
OCC	421	0.03	421	0.03	-2.57
WTF ALFA	419	0.03	415	0.03	-1.63
TBS INTERNET	418	0.03	418	0.03	-2.57
Zimbra Collaboration Suite	379	0.03	383	0.03	-3.59
SECOM Trust.net	379	0.03	407	0.03	-9.28
Apache HTTP Server	375	0.03	359	0.03	1.77
SwissSign AG	364	0.03	341	0.03	4.00
Getronics Nederland BV	340	0.03	322	0.02	2.87
OptimumSSL CA	333	0.02	318	0.02	2.02
XX	327	0.02	316	0.02	0.82
KAGOYA JAPAN Inc.	316	0.02	307	0.02	0.28
HTTPS Management Certificate for SonicWALL (self-signed)	296	0.02	279	0.02	3.36
Generalitat Valenciana	290	0.02	287	0.02	-1.55
NetLock Halozatbiztonsagi Kft.	289	0.02	299	0.02	-5.83
InterWorx	283	0.02	270	0.02	2.12
Trend Micro Inc	277	0.02	252	0.02	7.09
SGssl	272	0.02	263	0.02	0.76
Ministere education nationale (MENESR)	266	0.02	258	0.02	0.45
SonicWALL, Inc.	255	0.02	251	0.02	-1.02
DOMENY.PL Ltd.	243	0.02	231	0.02	2.49
OVH SAS	234	0.02	343	0.03	-33.53
Agencia Catalana de Certificacio (NIF Q-0801176-I)	231	0.02	226	0.02	-0.42
PVE Cluster Manager CA	219	0.02	176	0.01	21.23
WebSpace-Forum, Thomas Wendt	214	0.02	224	0.02	-6.92
Wells Fargo	212	0.02	213	0.02	-3.03
Dotname Korea Corp.	212	0.02	205	0.02	0.75
TrustSign Certificadora Digital	211	0.02	197	0.01	4.35
Secure Business Services, Inc.	197	0.01	201	0.02	-4.51
Digi-Sign Limited	194	0.01	195	0.01	-3.07
Positive Software	193	0.01	188	0.01	0.02
My Company Ltd	180	0.01	187	0.01	-6.22
Sonera	179	0.01	174	0.01	0.23
DREAMSCAPE NETWORKS FZ-LLC	177	0.01	0	0.00	N/A
DREAMHOST CERTIFICATION AUTHORITY	175	0.01	171	0.01	-0.29

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.