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 2009 Count	May 2009 %	April 2009 Count	April 2009 %	Growth %
Equifax (Geotrust)	141,685	25.82	139,332	26.03	-0.79
Verisign	80,107	14.60	79,397	14.83	-1.56
GoDaddy.com, Inc.	59,402	10.83	55,844	10.43	3.78
Thawte	58,852	10.73	58,218	10.87	-1.37
Comodo Limited	45,848	8.36	45,071	8.42	-0.75
Unknown	13,411	2.44	13,001	2.43	0.64
Network Solutions L.L.C.	10,900	1.99	10,555	1.97	0.76
DigiCert	10,333	1.88	9,868	1.84	2.16
Starfield Technologies, Inc.	8,218	1.50	8,199	1.53	-2.21
GlobalSign	7,874	1.43	7,520	1.40	2.16
GlobalSign nv-sa	7,365	1.34	7,095	1.33	1.28
Comodo CA Limited	7,138	1.30	6,809	1.27	2.28
Entrust.net	5,279	0.96	5,379	1.00	-4.25
SomeOrganization	3,968	0.72	3,919	0.73	-1.21
Cybertrust	3,954	0.72	3,811	0.71	1.23
SWsoft, Inc.	3,695	0.67	3,739	0.70	-3.58
SecureTrust Corporation	3,202	0.58	3,077	0.57	1.53
IPS Certification Authority s.l.	2,906	0.53	2,844	0.53	-0.31
COMODO CA Limited	2,723	0.50	2,220	0.41	19.67
Betrusted Japan Co., Ltd.	2,040	0.37	2,000	0.37	-0.48
Root CA	1,760	0.32	1,724	0.32	-0.40
Entrust, Inc.	1,607	0.29	903	0.17	73.63
Snake Oil, Ltd	1,569	0.29	1,599	0.30	-4.26
SECOM Trust.net	1,569	0.29	1,567	0.29	-2.31
Secure Business Services, Inc.	1,368	0.25	1,370	0.26	-2.58
SECOM Trust Systems CO.,LTD.	1,264	0.23	1,199	0.22	2.86
Alpha	1,251	0.23	1,172	0.22	4.14
Parallels	1,157	0.21	990	0.18	14.03
U.S. Government	1,113	0.20	1,121	0.21	-3.13
Akamai Technologies Inc	1,055	0.19	994	0.19	3.55
XRamp Security Services Inc	907	0.17	939	0.18	-5.76
CAcert Inc.	880	0.16	852	0.16	0.77
Servision Inc.	763	0.14	729	0.14	2.12
TC TrustCenter for Security in Data Networks GmbH	722	0.13	803	0.15	-12.27
T-Systems Enterprise Services GmbH	715	0.13	695	0.13	0.37
ispgateway	652	0.12	643	0.12	-1.07
p1atin.de	649	0.12	0	0.00	N/A
Firstserver, Inc.	598	0.11	586	0.11	-0.43
GTE Corporation	584	0.11	565	0.11	0.85
Unizeto Sp. z o.o.	567	0.10	596	0.11	-7.18
thawte, Inc.	519	0.09	486	0.09	4.19
Trusted Secure Certificate Authority	469	0.09	459	0.09	-0.31
StartCom Ltd.	448	0.08	434	0.08	0.71
Firstserver, Inc	390	0.07	377	0.07	0.93
OCC	340	0.06	339	0.06	-2.14
NetLock Halozatbiztonsagi Kft.	340	0.06	327	0.06	1.45
Cybertrust Inc	324	0.06	312	0.06	1.32
Trustwave Holdings, Inc.	322	0.06	313	0.06	0.37
suresupport.com	311	0.06	292	0.05	3.92
AddTrust AB	309	0.06	403	0.08	-25.19
Earthlink Inc	308	0.06	335	0.06	-10.30
Sonera	273	0.05	261	0.05	2.05
TC TrustCenter GmbH	269	0.05	221	0.04	18.76
TBS INTERNET	268	0.05	264	0.05	-0.95
TDC	258	0.05	254	0.05	-0.90
none	251	0.05	239	0.04	2.47
WTF ALFA	240	0.04	235	0.04	-0.36
Internet Widgits Pty Ltd	237	0.04	228	0.04	1.42
GeoTrust Inc	231	0.04	219	0.04	2.91
FNMT	227	0.04	220	0.04	0.67
Register.com	222	0.04	197	0.04	9.95
Digi-Sign Limited	211	0.04	211	0.04	-2.43
ICP-Brasil	192	0.03	173	0.03	8.28
WebSpace-Forum, Thomas Wendt	186	0.03	174	0.03	4.30
Positive Software	171	0.03	168	0.03	-0.69
TAIWAN-CA.COM Inc.	169	0.03	166	0.03	-0.67
RM	163	0.03	158	0.03	0.65
National Institute of Informatics	163	0.03	162	0.03	-1.83
My Company Ltd	155	0.03	157	0.03	-3.68
CNRS	155	0.03	151	0.03	0.15
SonicWALL, Inc.	151	0.03	143	0.03	3.03
Apache HTTP Server	148	0.03	154	0.03	-6.23
QuoVadis Limited	143	0.03	124	0.02	12.52
OVH SAS	137	0.02	131	0.02	2.04
Positive Software Corporation	136	0.02	144	0.03	-7.85
America Online Inc.	135	0.02	125	0.02	5.37
TNC	127	0.02	127	0.02	-2.43
OptimumSSL CA	127	0.02	128	0.02	-3.20
Unicert Brasil Certificadora	122	0.02	122	0.02	-2.43
RegisterFly.com, inc.	119	0.02	127	0.02	-8.58
Parallels, Inc.	117	0.02	102	0.02	11.92
New Dream Network, LLC.	116	0.02	113	0.02	0.16
Default Web Site	116	0.02	121	0.02	-6.46
Sun Microsystems Inc	112	0.02	110	0.02	-0.66
InterWorx	112	0.02	109	0.02	0.25
MULTICERT-CA	109	0.02	107	0.02	-0.61
ServerAdmin 24	108	0.02	105	0.02	0.35
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH	108	0.02	107	0.02	-1.52
GlobalSign Inc	99	0.02	98	0.02	-1.44
RBC Hosting Center	98	0.02	85	0.02	12.49
IceWarp Software	96	0.02	95	0.02	-1.41
Digital Signature Trust Co.	95	0.02	97	0.02	-4.44
CsideNet Co.,Ltd.	88	0.02	86	0.02	-0.16
ICS_TREE	87	0.02	89	0.02	-4.63
Unizeto Technologies S.A.	84	0.02	0	0.00	N/A
Getronics PinkRoccade Nederland B.V.	84	0.02	77	0.01	6.44
WoSign, Inc.	78	0.01	0	0.00	N/A
Etisalat	78	0.01	73	0.01	4.25
CENTRAL SECURITY PATROLS CO., LTD.	78	0.01	77	0.01	-1.17
Zimbra Collaboration Suite	77	0.01	0	0.00	N/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.