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 doesn't verify the signatures of the certificates it finds, it only uses the issuer Organization Name to uniquely identify the issuing CA.

CA	March 2007 Count	March 2007 %	February 2007 Count	February 2007 %	Growth %
Verisign	78,800	24.44	77,998	24.86	-1.71
Equifax (Geotrust)	69,157	21.45	66,861	21.31	0.63
Thawte	44,127	13.68	43,423	13.84	-1.14
Comodo Limited	26,798	8.31	25,429	8.11	2.52
Starfield Technologies, Inc.	14,993	4.65	15,171	4.84	-3.85
Unknown	7,589	2.35	7,288	2.32	1.30
DigiCert	6,828	2.12	6,224	1.98	6.73
AddTrust AB	4,413	1.37	4,815	1.53	-10.84
Entrust.net	4,079	1.27	4,172	1.33	-4.88
Network Solutions L.L.C.	3,414	1.06	3,404	1.09	-2.43
SomeOrganization	3,320	1.03	3,226	1.03	0.12
SWsoft, Inc.	3,034	0.94	2,951	0.94	0.02
XRamp Security Services Inc	2,299	0.71	2,224	0.71	0.57
GoDaddy.com, Inc.	2,103	0.65	452	0.14	352.64
Snake Oil, Ltd	1,918	0.59	1,903	0.61	-1.95
U.S. Government	1,393	0.43	1,371	0.44	-1.15
SECOM Trust.net	1,171	0.36	945	0.30	20.55
IPS Certification Authority s.l.	1,146	0.36	1,111	0.35	0.35
Root CA	1,045	0.32	992	0.32	2.48
TC TrustCenter for Security in Data Networks GmbH	978	0.30	954	0.30	-0.27
GlobalSign nv-sa	942	0.29	900	0.29	1.83
Positive Software Corporation	633	0.20	663	0.21	-7.12
Comodo CA Limited	619	0.19	444	0.14	35.63
Earthlink Inc	572	0.18	577	0.18	-3.56
Cybertrust	548	0.17	438	0.14	21.72
Betrusted Japan Co.,Ltd.	521	0.16	568	0.18	-10.76
Secure Business Services, Inc.	475	0.15	387	0.12	19.41
ispgateway	396	0.12	389	0.12	-0.96
T-Systems Enterprise Services GmbH	361	0.11	351	0.11	0.06
GTE Corporation	307	0.10	300	0.10	-0.44
Comodo Japan Inc.	277	0.09	288	0.09	-6.43
Firstserver, Inc.	266	0.08	251	0.08	3.10
CAcert Inc.	240	0.07	220	0.07	6.13
Betrusted Japan Co., Ltd.	238	0.07	164	0.05	41.18
OCC	225	0.07	210	0.07	4.24
Unizeto Sp. z o.o.	210	0.07	158	0.05	29.31
TDC	202	0.06	197	0.06	-0.24
ChainedSSL	192	0.06	195	0.06	-4.21
BlueHost.Com	179	0.06	170	0.05	2.44
Kubota Systems Inc.	174	0.05	216	0.07	-21.63
StartCom Ltd.	172	0.05	166	0.05	0.80
Akamai Technologies Inc	172	0.05	153	0.05	9.37
Digi-Sign Limited	170	0.05	163	0.05	1.46
Plesk, Inc.	159	0.05	174	0.06	-11.10
Trusted Secure Certificate Authority	145	0.04	134	0.04	5.27
NetLock Halozatbiztonsagi Kft.	145	0.04	146	0.05	-3.38
Apache HTTP Server	144	0.04	144	0.05	-2.71
Your Name Webhosting	139	0.04	127	0.04	6.48
RegisterFly.com, inc.	132	0.04	110	0.04	16.74
RM	129	0.04	127	0.04	-1.18
Positive Software	127	0.04	132	0.04	-6.40
NTT Communications Corporation	125	0.04	125	0.04	-2.71
ICS_TREE	109	0.03	111	0.04	-4.47
Akamai	107	0.03	117	0.04	-11.03
GlobalSign Inc	106	0.03	105	0.03	-1.79
Internet Widgits Pty Ltd	105	0.03	99	0.03	3.18
FreeSSL	103	0.03	124	0.04	-19.19
CNRS	99	0.03	97	0.03	-0.71
Digital Signature Trust Co.	96	0.03	97	0.03	-3.72
hosting	94	0.03	88	0.03	3.92
Ipswitch,Inc.	92	0.03	100	0.03	-10.50
ICP-Brasil	92	0.03	88	0.03	1.71
Default Web Site	86	0.03	88	0.03	-4.92
CRU	85	0.03	89	0.03	-7.09
FNMT	81	0.03	72	0.02	9.45
TBS INTERNET	80	0.02	73	0.02	6.62
Sonera	79	0.02	68	0.02	13.02
IceWarp Software	77	0.02	82	0.03	-8.65
Plesk Inc.	75	0.02	84	0.03	-13.14
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH	72	0.02	69	0.02	1.52
Thawte Certification	70	0.02	75	0.02	-9.20
MULTICERT-CA	70	0.02	65	0.02	4.77
Sun Microsystems Inc	68	0.02	66	0.02	0.23
Unicert Brasil Certificadora	64	0.02	62	0.02	0.42
WebMoney Transfer	63	0.02	62	0.02	-1.14
New Dream Network, LLC.	63	0.02	57	0.02	7.53
United Network Communications Co., Ltd.	59	0.02	59	0.02	-2.71
My Company Ltd	58	0.02	60	0.02	-5.96
Japan Certification Services, Inc.	57	0.02	59	0.02	-6.01
InterWorx	54	0.02	52	0.02	1.03
XYZ Corporation	51	0.02	52	0.02	-4.58
Temp Certificate!	51	0.02	50	0.02	-0.77
Firstserver, Inc	50	0.02	0	0.00	N/A
Wytwornia Telewizyjno-Filmowa "Alfa"	47	0.01	42	0.01	8.87
Linkopings universitet	47	0.01	46	0.01	-0.60
TAIWAN-CA.COM	46	0.01	49	0.02	-8.67
CsideNet	46	0.01	53	0.02	-15.56
p1atin.de	45	0.01	45	0.01	-2.71
TAIWAN-CA.COM Inc.	45	0.01	0	0.00	N/A
WOI TBD LUW	44	0.01	44	0.01	-2.71
University of Maryland	43	0.01	41	0.01	2.03
IceWarp Ltd.	43	0.01	43	0.01	-2.71
SuSE Linux Web Server	42	0.01	46	0.01	-11.17
Prvni certifikacni autorita a.s.	42	0.01	41	0.01	-0.34
Carnegie Mellon University	42	0.01	40	0.01	2.15
AS Sertifitseerimiskeskus	42	0.01	0	0.00	N/A
University of Washington	41	0.01	39	0.01	2.28
Postecom S.p.A.	41	0.01	39	0.01	2.28
Stunnel Developers Ltd	40	0.01	50	0.02	-22.17
Cisco Systems, Inc.	40	0.01	39	0.01	-0.22

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.