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 2004 Count	May 2004 %	April 2004 Count	April 2004 %	Growth %
Verisign	69,598	39.21	69,412	39.66	-1.13
Thawte	34,322	19.34	34,014	19.43	-0.50
Equifax (Geotrust)	26,962	15.19	26,150	14.94	1.67
Comodo Limited	11,603	6.54	11,081	6.33	3.25
SomeOrganization	2,662	1.50	2,575	1.47	1.94
Entrust.net	2,297	1.29	2,260	1.29	0.22
Snake Oil, Ltd	2,235	1.26	2,222	1.27	-0.82
Unknown	1,058	0.60	966	0.55	8.00
The USERTRUST Network	1,013	0.57	881	0.50	13.38
U.S. Government	853	0.48	1,222	0.70	-31.17
FreeSSL	786	0.44	749	0.43	3.48
IPS Certification Authority s.l.	542	0.31	523	0.30	2.19
Plesk, Inc.	531	0.30	551	0.31	-4.97
TC TrustCenter for Security in Data Networks GmbH	459	0.26	447	0.26	1.25
SWsoft, Inc.	444	0.25	367	0.21	19.30
GlobalSign nv-sa	352	0.20	339	0.19	2.39
Plesk Inc.	298	0.17	338	0.19	-13.06
Ipswitch,Inc.	237	0.13	218	0.12	7.20
GTE Corporation	231	0.13	226	0.13	0.79
Deutsche Telekom AG	224	0.13	223	0.13	-0.95
XRamp Security Services Inc	158	0.09	138	0.08	12.90
Baltimore Technologies Japan Co.,Ltd.	154	0.09	144	0.08	5.45
Equifax Secure Inc	142	0.08	142	0.08	-1.39
ispgateway	140	0.08	134	0.08	3.02
Starfield Technologies, Inc.	122	0.07	70	0.04	71.86
Thawte Certification	112	0.06	113	0.06	-2.27
Kubota Systems Inc.	109	0.06	106	0.06	1.40
Digital Signature Trust Co.	86	0.05	75	0.04	13.07
NetLock Halozatbiztonsagi Kft.	75	0.04	73	0.04	1.31
IceWarp Software	74	0.04	69	0.04	5.75
Internet Widgits Pty Ltd	72	0.04	67	0.04	5.97
Positive Software	70	0.04	65	0.04	6.19
TDC	67	0.04	63	0.04	4.87
Advanced Extranet Server	58	0.03	64	0.04	-10.64
Apache HTTP Server	55	0.03	46	0.03	17.90
TAIWAN-CA.COM Inc.	54	0.03	54	0.03	-1.39
XYZ Corporation	53	0.03	52	0.03	0.50
Root CA	52	0.03	49	0.03	4.64
CsideNet	52	0.03	53	0.03	-3.25
Unizeto Sp. z o.o.	49	0.03	47	0.03	2.80
Hurricane Electric Internet Services	46	0.03	45	0.03	0.80
United Network Communications Co., Ltd.	45	0.03	41	0.02	8.23
Akamai	45	0.03	40	0.02	10.93
CETI	42	0.02	42	0.02	-1.39
OCC	40	0.02	39	0.02	1.14
Beocity	40	0.02	40	0.02	-1.39
WebMoney Transfer	38	0.02	37	0.02	1.27
University of Florida	38	0.02	39	0.02	-3.92
Webmin Software	37	0.02	41	0.02	-11.01
Communitymusician	37	0.02	37	0.02	-1.39
Sun Cobalt	36	0.02	34	0.02	4.41
SCNC	36	0.02	37	0.02	-4.06
KICA	36	0.02	35	0.02	1.42
Stalker Software, Inc.	34	0.02	31	0.02	8.15
ICS_TREE	34	0.02	32	0.02	4.77
CNRS	33	0.02	32	0.02	1.69
NeoNova B.V.	32	0.02	32	0.02	-1.39
Azero	32	0.02	25	0.01	26.22
Sun Microsystems Inc	31	0.02	31	0.02	-1.39
Tele Danmark	30	0.02	31	0.02	-4.57
Japan Certification Services, Inc.	29	0.02	26	0.01	9.98
Franke & Partner	29	0.02	29	0.02	-1.39
cv. Candi Internet	28	0.02	0	0.00	N/A
University of Maryland	27	0.02	28	0.02	-4.91
MULTICERT-CA	27	0.02	26	0.01	2.40
ICP-Brasil	27	0.02	23	0.01	15.76
Technische Universitaet Chemnitz	26	0.01	24	0.01	6.82
Massachusetts Institute of Technology	26	0.01	24	0.01	6.82
Deutsches Forschungsnetz	26	0.01	28	0.02	-8.44
Ensim Corporation	25	0.01	26	0.01	-5.19
UniCERT Brasil Certificadora	24	0.01	24	0.01	-1.39
Temp Certificate!	24	0.01	23	0.01	2.89
Stunnel Developers Ltd	24	0.01	21	0.01	12.69
Sedo GmbH	24	0.01	82	0.05	-71.14
FNMT	24	0.01	21	0.01	12.69
Your Organization	23	0.01	25	0.01	-9.28
University of Helsinki	22	0.01	22	0.01	-1.39
SCANDTRUST AB	22	0.01	21	0.01	3.30
Etisalat	22	0.01	21	0.01	3.30
Carnegie Mellon University	22	0.01	20	0.01	8.47
1&1 Internet Limited	22	0.01	18	0.01	20.52
RM	21	0.01	0	0.00	N/A
PVT a.s.	21	0.01	20	0.01	3.54
My Company Ltd	21	0.01	18	0.01	15.04
Advantagecom Networks, Inc.	21	0.01	21	0.01	-1.39
ROOT	20	0.01	20	0.01	-1.39
FAS	20	0.01	20	0.01	-1.39
Audkenni hf.	20	0.01	20	0.01	-1.39
Aaex Corp.	20	0.01	19	0.01	3.80
The Chinese University of Hong Kong	19	0.01	19	0.01	-1.39
Postecom s.p.a.	19	0.01	17	0.01	10.21
PKI Partner AB	19	0.01	20	0.01	-6.32
Onyx Internet	19	0.01	18	0.01	4.09
pair Networks	18	0.01	17	0.01	4.41
Usermin Webserver	18	0.01	18	0.01	-1.39
SOGO KEIBI HOSHO CO.LTD	18	0.01	17	0.01	4.41
INFN	18	0.01	17	0.01	4.41
Career Education Corporation	18	0.01	18	0.01	-1.39
beTRUSTed	17	0.01	0	0.00	N/A
Web Hosting	17	0.01	17	0.01	-1.39

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.