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 2005 Count	May 2005 %	April 2005 Count	April 2005 %	Growth %
Verisign	73,200	33.09	73,519	33.37	-0.84
Thawte	38,193	17.27	38,306	17.39	-0.71
Equifax (Geotrust)	37,243	16.84	36,628	16.63	1.26
Comodo Limited	18,812	8.50	18,518	8.41	1.17
The USERTRUST Network	3,279	1.48	3,435	1.56	-4.93
Entrust.net	3,239	1.46	3,236	1.47	-0.32
SomeOrganization	3,076	1.39	3,118	1.42	-1.75
Unknown	2,826	1.28	2,723	1.24	3.36
Starfield Technologies, Inc.	2,671	1.21	2,379	1.08	11.81
Snake Oil, Ltd	2,109	0.95	2,163	0.98	-2.90
SWsoft, Inc.	1,463	0.66	1,435	0.65	1.53
U.S. Government	1,365	0.62	1,369	0.62	-0.70
XRamp Security Services Inc	949	0.43	897	0.41	5.36
ChainedSSL	938	0.42	62	0.03	1406.67
FreeSSL	926	0.42	1,779	0.81	-48.16
IPS Certification Authority s.l.	706	0.32	685	0.31	2.64
TC TrustCenter for Security in Data Networks GmbH	679	0.31	691	0.31	-2.14
DigiCert Inc.	535	0.24	489	0.22	8.96
GlobalSign nv-sa	484	0.22	454	0.21	6.17
Plesk, Inc.	358	0.16	380	0.17	-6.18
Root CA	316	0.14	292	0.13	7.77
Deutsche Telekom AG	284	0.13	281	0.13	0.65
GTE Corporation	266	0.12	113	0.05	134.43
Ipswitch,Inc.	237	0.11	246	0.11	-4.06
ispgateway	208	0.09	206	0.09	0.56
Plesk Inc.	175	0.08	188	0.09	-7.30
TDC	156	0.07	155	0.07	0.23
Your Name Webhosting	146	0.07	136	0.06	6.91
Kubota Systems Inc.	146	0.07	141	0.06	3.12
Betrusted Japan Co.,Ltd.	146	0.07	109	0.05	33.39
Baltimore Technologies Japan Co.,Ltd.	131	0.06	147	0.07	-11.25
Apache HTTP Server	127	0.06	110	0.05	14.98
Positive Software	114	0.05	106	0.05	7.10
Thawte Certification	108	0.05	119	0.05	-9.62
IceWarp Software	103	0.05	108	0.05	-5.02
Akamai	103	0.05	100	0.05	2.58
Internet Widgits Pty Ltd	94	0.04	90	0.04	4.01
My Company Ltd	92	0.04	93	0.04	-1.48
Digital Signature Trust Co.	89	0.04	102	0.05	-13.10
NetLock Halozatbiztonsagi Kft.	86	0.04	89	0.04	-3.77
Equifax Secure Inc	84	0.04	85	0.04	-1.58
OCC	81	0.04	80	0.04	0.83
Unizeto Sp. z o.o.	75	0.03	73	0.03	2.32
ICS_TREE	66	0.03	66	0.03	-0.41
Azero	61	0.03	61	0.03	-0.41
United Network Communications Co., Ltd.	60	0.03	60	0.03	-0.41
XYZ Corporation	59	0.03	63	0.03	-6.73
Stunnel Developers Ltd	58	0.03	64	0.03	-9.75
CsideNet	55	0.02	53	0.02	3.35
RM	53	0.02	51	0.02	3.49
WebMoney Transfer	51	0.02	50	0.02	1.58
CNRS	50	0.02	48	0.02	3.74
Japan Certification Services, Inc.	48	0.02	49	0.02	-2.44
Advanced Extranet Server	46	0.02	47	0.02	-2.53
CRU	45	0.02	42	0.02	6.70
Comodo Japan Inc.	44	0.02	37	0.02	18.43
Sun Microsystems Inc	43	0.02	43	0.02	-0.41
ICP-Brasil	43	0.02	46	0.02	-6.91
MULTICERT-CA	42	0.02	41	0.02	2.02
SCNC	41	0.02	41	0.02	-0.41
Webmin Software	40	0.02	41	0.02	-2.84
KICA	40	0.02	40	0.02	-0.41
UniCERT Brasil Certificadora	39	0.02	36	0.02	7.89
Beocity	39	0.02	39	0.02	-0.41
Sun Cobalt	37	0.02	39	0.02	-5.52
NTT Communications Corporation	37	0.02	38	0.02	-3.03
Stalker Software, Inc.	36	0.02	38	0.02	-5.65
TAIWAN-CA.COM Inc.	35	0.02	40	0.02	-12.86
FNMT	34	0.02	35	0.02	-3.26
CETI	34	0.02	34	0.02	-0.41
University of Maryland	31	0.01	30	0.01	2.91
DFN-CERT Services GmbH	31	0.01	31	0.01	-0.41
Temp Certificate!	30	0.01	32	0.01	-6.64
cv. Candi Internet	29	0.01	28	0.01	3.14
University of Helsinki	29	0.01	28	0.01	3.14
Etisalat	29	0.01	30	0.01	-3.73
Your Name	28	0.01	27	0.01	3.28
ORACLE DEMO CA	28	0.01	26	0.01	7.25
NeoNova B.V.	28	0.01	28	0.01	-0.41
Firstserver, Inc.	28	0.01	28	0.01	-0.41
Carnegie Mellon University	28	0.01	28	0.01	-0.41
domainsofnote.com	27	0.01	28	0.01	-3.97
Massachusetts Institute of Technology	27	0.01	28	0.01	-3.97
IceWarp Ltd.	27	0.01	25	0.01	7.56
CFC	27	0.01	26	0.01	3.42
Audkenni hf.	27	0.01	30	0.01	-10.37
SuSE Linux Web Server	26	0.01	27	0.01	-4.10
Pro Futuro S.A.	26	0.01	27	0.01	-4.10
Franke & Partner	26	0.01	26	0.01	-0.41
Cardiff Schools	26	0.01	24	0.01	7.89
CESNET	26	0.01	25	0.01	3.57
ISPAdmin	25	0.01	26	0.01	-4.24
Your Organization	24	0.01	21	0.01	13.82
Hostgator	24	0.01	0	0.00	N/A
Hongkong Post	24	0.01	25	0.01	-4.40
Brno University of Technology	24	0.01	23	0.01	3.92
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH	24	0.01	25	0.01	-4.40
Technische Universitaet Chemnitz	22	0.01	22	0.01	-0.41
Musterfirma	22	0.01	0	0.00	N/A
1&1 Internet Limited	22	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.