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 2007 Count	April 2007 %	March 2007 Count	March 2007 %	Growth %
Verisign	79,181	24.02	78,800	24.44	-1.70
Equifax (Geotrust)	71,237	21.61	69,157	21.45	0.77
Thawte	44,736	13.57	44,127	13.68	-0.82
Comodo Limited	27,879	8.46	26,798	8.31	1.78
Starfield Technologies, Inc.	14,825	4.50	14,993	4.65	-3.27
Unknown	7,852	2.38	7,589	2.35	1.22
DigiCert	7,357	2.23	6,828	2.12	5.41
Entrust.net	3,951	1.20	4,079	1.27	-5.24
AddTrust AB	3,781	1.15	4,413	1.37	-16.18
Network Solutions L.L.C.	3,701	1.12	3,414	1.06	6.05
GoDaddy.com, Inc.	3,548	1.08	2,103	0.65	65.05
SomeOrganization	3,342	1.01	3,320	1.03	-1.52
SWsoft, Inc.	3,045	0.92	3,034	0.94	-1.82
XRamp Security Services Inc	2,203	0.67	2,299	0.71	-6.26
Snake Oil, Ltd	1,923	0.58	1,918	0.59	-1.92
SECOM Trust.net	1,401	0.43	1,171	0.36	17.04
U.S. Government	1,397	0.42	1,393	0.43	-1.89
IPS Certification Authority s.l.	1,208	0.37	1,146	0.36	3.12
Root CA	1,118	0.34	1,045	0.32	4.66
TC TrustCenter for Security in Data Networks GmbH	1,016	0.31	978	0.30	1.63
GlobalSign nv-sa	950	0.29	942	0.29	-1.34
Comodo CA Limited	804	0.24	619	0.19	27.07
Cybertrust	657	0.20	548	0.17	17.29
Positive Software Corporation	599	0.18	633	0.20	-7.43
Secure Business Services, Inc.	581	0.18	475	0.15	19.66
Earthlink Inc	573	0.17	572	0.18	-2.00
Betrusted Japan Co.,Ltd.	445	0.14	521	0.16	-16.44
ispgateway	407	0.12	396	0.12	0.55
T-Systems Enterprise Services GmbH	380	0.12	361	0.11	2.98
Betrusted Japan Co., Ltd.	353	0.11	238	0.07	45.10
GTE Corporation	318	0.10	307	0.10	1.33
Firstserver, Inc.	268	0.08	266	0.08	-1.43
CAcert Inc.	257	0.08	240	0.07	4.76
Comodo Japan Inc.	246	0.07	277	0.09	-13.12
Firstserver, Inc	237	0.07	50	0.02	363.71
OCC	236	0.07	225	0.07	2.61
Unizeto Sp. z o.o.	221	0.07	210	0.07	2.95
TDC	212	0.06	202	0.06	2.67
Akamai Technologies Inc	203	0.06	172	0.05	15.46
StartCom Ltd.	182	0.06	172	0.05	3.52
BlueHost.Com	182	0.06	179	0.06	-0.53
ChainedSSL	181	0.05	192	0.06	-7.78
Digi-Sign Limited	177	0.05	170	0.05	1.86
NetLock Halozatbiztonsagi Kft.	161	0.05	145	0.04	8.62
Plesk, Inc.	160	0.05	159	0.05	-1.56
Trusted Secure Certificate Authority	158	0.05	145	0.04	6.60
RegisterFly.com, inc.	150	0.05	132	0.04	11.17
Apache HTTP Server	147	0.04	144	0.04	-0.13
Your Name Webhosting	142	0.04	139	0.04	-0.06
RM	135	0.04	129	0.04	2.38
Positive Software	128	0.04	127	0.04	-1.40
p1atin.de	121	0.04	45	0.01	163.05
GlobalSign Inc	120	0.04	106	0.03	10.75
COMODO CA Limited	118	0.04	0	0.00	N/A
NTT Communications Corporation	116	0.04	125	0.04	-9.21
hosting	112	0.03	94	0.03	16.56
Internet Widgits Pty Ltd	108	0.03	105	0.03	0.62
ICS_TREE	107	0.03	109	0.03	-3.97
CNRS	104	0.03	99	0.03	2.77
TBS INTERNET	102	0.03	80	0.02	24.73
FreeSSL	99	0.03	103	0.03	-5.97
Digital Signature Trust Co.	97	0.03	96	0.03	-1.15
ICP-Brasil	96	0.03	92	0.03	2.08
SecureTrust Corporation	91	0.03	0	0.00	N/A
Default Web Site	89	0.03	86	0.03	1.24
Akamai	89	0.03	107	0.03	-18.63
Sonera	88	0.03	79	0.02	8.97
Ipswitch,Inc.	88	0.03	92	0.03	-6.42
FNMT	87	0.03	81	0.03	5.08
CRU	81	0.02	85	0.03	-6.77
Plesk Inc.	78	0.02	75	0.02	1.74
IceWarp Software	77	0.02	77	0.02	-2.17
Sun Microsystems Inc	71	0.02	68	0.02	2.15
MULTICERT-CA	71	0.02	70	0.02	-0.77
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH	71	0.02	72	0.02	-3.53
My Company Ltd	69	0.02	58	0.02	16.38
Thawte Certification	68	0.02	70	0.02	-4.97
WebMoney Transfer	65	0.02	63	0.02	0.94
New Dream Network, LLC.	64	0.02	63	0.02	-0.62
Unicert Brasil Certificadora	63	0.02	64	0.02	-3.70
United Network Communications Co., Ltd.	59	0.02	59	0.02	-2.17
InterWorx	59	0.02	54	0.02	6.89
XYZ Corporation	58	0.02	51	0.02	11.26
Japan Certification Services, Inc.	58	0.02	57	0.02	-0.45
Temp Certificate!	57	0.02	51	0.02	9.34
Wytwornia Telewizyjno-Filmowa "Alfa"	56	0.02	47	0.01	16.56
TAIWAN-CA.COM Inc.	48	0.01	45	0.01	4.35
University of Maryland	47	0.01	43	0.01	6.93
Linkopings universitet	47	0.01	47	0.01	-2.17
WebSpace-Forum, Thomas Wendt	46	0.01	0	0.00	N/A
Postecom S.p.A.	46	0.01	41	0.01	9.76
SuSE Linux Web Server	45	0.01	42	0.01	4.82
CsideNet	44	0.01	46	0.01	-6.42
TAIWAN-CA.COM	43	0.01	46	0.01	-8.55
Cisco Systems, Inc.	43	0.01	40	0.01	5.17
University of Washington	42	0.01	41	0.01	0.22
Prvni certifikacni autorita a.s.	42	0.01	42	0.01	-2.17
IceWarp Ltd.	42	0.01	43	0.01	-4.45
Apache Friends	42	0.01	0	0.00	N/A
"PositiveSoftwareCorporation"	41	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.