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 2007 Count	May 2007 %	April 2007 Count	April 2007 %	Growth %
Verisign	79,447	23.60	79,181	24.02	-1.78
Equifax (Geotrust)	73,007	21.68	71,237	21.61	0.33
Thawte	45,242	13.44	44,736	13.57	-1.00
Comodo Limited	28,618	8.50	27,879	8.46	0.49
Starfield Technologies, Inc.	14,886	4.42	14,825	4.50	-1.70
Unknown	8,088	2.40	7,852	2.38	0.84
DigiCert	8,011	2.38	7,357	2.23	6.59
GoDaddy.com, Inc.	4,725	1.40	3,548	1.08	30.37
Entrust.net	3,957	1.18	3,951	1.20	-1.96
Network Solutions L.L.C.	3,953	1.17	3,701	1.12	4.56
AddTrust AB	3,555	1.06	3,781	1.15	-7.96
SomeOrganization	3,344	0.99	3,342	1.01	-2.05
SWsoft, Inc.	3,167	0.94	3,045	0.92	1.81
XRamp Security Services Inc	2,176	0.65	2,203	0.67	-3.31
Snake Oil, Ltd	1,939	0.58	1,923	0.58	-1.29
SECOM Trust.net	1,540	0.46	1,401	0.43	7.61
U.S. Government	1,419	0.42	1,397	0.42	-0.57
IPS Certification Authority s.l.	1,235	0.37	1,208	0.37	0.08
Root CA	1,128	0.34	1,118	0.34	-1.23
TC TrustCenter for Security in Data Networks GmbH	1,038	0.31	1,016	0.31	0.01
Comodo CA Limited	1,007	0.30	804	0.24	22.61
GlobalSign nv-sa	984	0.29	950	0.29	1.40
Cybertrust	737	0.22	657	0.20	9.81
Secure Business Services, Inc.	635	0.19	581	0.18	6.99
Positive Software Corporation	576	0.17	599	0.18	-5.87
Earthlink Inc	567	0.17	573	0.17	-3.13
Betrusted Japan Co.,Ltd.	422	0.13	445	0.14	-7.17
ispgateway	410	0.12	407	0.12	-1.39
Betrusted Japan Co., Ltd.	405	0.12	353	0.11	12.31
T-Systems Enterprise Services GmbH	395	0.12	380	0.12	1.76
GTE Corporation	321	0.10	318	0.10	-1.18
CAcert Inc.	289	0.09	257	0.08	10.08
Firstserver, Inc.	275	0.08	268	0.08	0.45
OCC	247	0.07	236	0.07	2.46
Firstserver, Inc	244	0.07	237	0.07	0.78
Comodo Japan Inc.	236	0.07	246	0.07	-6.09
Unizeto Sp. z o.o.	235	0.07	221	0.07	4.09
Akamai Technologies Inc	230	0.07	203	0.06	10.91
TDC	220	0.07	212	0.06	1.59
SecureTrust Corporation	207	0.06	91	0.03	122.68
BlueHost.Com	196	0.06	182	0.06	5.42
StartCom Ltd.	188	0.06	182	0.06	1.12
Digi-Sign Limited	181	0.05	177	0.05	0.11
Trusted Secure Certificate Authority	170	0.05	158	0.05	5.33
RegisterFly.com, inc.	168	0.05	150	0.05	9.64
NetLock Halozatbiztonsagi Kft.	168	0.05	161	0.05	2.15
COMODO CA Limited	165	0.05	118	0.04	36.88
ChainedSSL	155	0.05	181	0.05	-16.17
Your Name Webhosting	152	0.05	142	0.04	4.79
Plesk, Inc.	148	0.04	160	0.05	-9.45
Apache HTTP Server	137	0.04	147	0.04	-8.77
RM	136	0.04	135	0.04	-1.38
GlobalSign Inc	125	0.04	120	0.04	1.97
Positive Software	124	0.04	128	0.04	-5.17
p1atin.de	121	0.04	121	0.04	-2.11
Internet Widgits Pty Ltd	115	0.03	108	0.03	4.24
hosting	114	0.03	112	0.03	-0.36
TBS INTERNET	111	0.03	102	0.03	6.53
NTT Communications Corporation	110	0.03	116	0.04	-7.17
CNRS	104	0.03	104	0.03	-2.11
ICS_TREE	101	0.03	107	0.03	-7.60
Digital Signature Trust Co.	97	0.03	97	0.03	-2.11
FNMT	95	0.03	87	0.03	6.89
ICP-Brasil	94	0.03	96	0.03	-4.15
FreeSSL	94	0.03	99	0.03	-7.05
Default Web Site	94	0.03	89	0.03	3.39
Sonera	91	0.03	88	0.03	1.23
Ipswitch,Inc.	86	0.03	88	0.03	-4.33
CRU	82	0.02	81	0.02	-0.90
My Company Ltd	80	0.02	69	0.02	13.50
Plesk Inc.	78	0.02	78	0.02	-2.11
IceWarp Software	77	0.02	77	0.02	-2.11
MULTICERT-CA	74	0.02	71	0.02	2.03
Thawte Certification	73	0.02	68	0.02	5.09
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH	73	0.02	71	0.02	0.65
Sun Microsystems Inc	72	0.02	71	0.02	-0.73
Akamai	69	0.02	89	0.03	-24.11
New Dream Network, LLC.	68	0.02	64	0.02	4.01
Unicert Brasil Certificadora	66	0.02	63	0.02	2.55
Temp Certificate!	66	0.02	57	0.02	13.35
Wytwornia Telewizyjno-Filmowa "Alfa"	63	0.02	56	0.02	10.13
WebMoney Transfer	63	0.02	65	0.02	-5.12
United Network Communications Co., Ltd.	59	0.02	59	0.02	-2.11
TAIWAN-CA.COM Inc.	59	0.02	48	0.01	20.33
XYZ Corporation	57	0.02	58	0.02	-3.80
Japan Certification Services, Inc.	57	0.02	58	0.02	-3.80
InterWorx	57	0.02	59	0.02	-5.43
WebSpace-Forum, Thomas Wendt	55	0.02	46	0.01	17.05
"PositiveSoftwareCorporation"	52	0.02	41	0.01	24.16
Postecom S.p.A.	48	0.01	46	0.01	2.15
Linkopings universitet	48	0.01	47	0.01	-0.02
Apache Friends	48	0.01	42	0.01	11.88
CsideNet	47	0.01	44	0.01	4.57
University of Maryland	46	0.01	47	0.01	-4.19
IceWarp Ltd.	46	0.01	42	0.01	7.22
University of Washington	45	0.01	42	0.01	4.89
SuSE Linux Web Server	44	0.01	45	0.01	-4.28
Prvni certifikacni autorita a.s.	44	0.01	42	0.01	2.55
Carnegie Mellon University	43	0.01	0	0.00	N/A
Cisco Systems, Inc.	42	0.01	43	0.01	-4.38

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.