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	April 2003 Count	April 2003 %	March 2003 Count	March 2003 %	Growth %
Verisign	51,702	41.02	47,718	39.25	4.51
Thawte	31,546	25.03	32,033	26.35	-5.01
Equifax (Geotrust)	15,259	12.11	14,471	11.90	1.71
Unknown	3,982	3.16	3,910	3.22	-1.76
Comodo Limited	2,520	2.00	2,010	1.65	20.94
Snake Oil, Ltd	1,915	1.52	1,940	1.60	-4.78
SomeOrganization	1,447	1.15	1,404	1.15	-0.58
U.S. Government	978	0.78	941	0.77	0.25
Entrust.net	864	0.69	1,001	0.82	-16.74
Equifax Secure Inc	660	0.52	1,795	1.48	-64.53
Plesk Inc.	610	0.48	683	0.56	-13.85
The USERTRUST Network	448	0.36	363	0.30	19.05
TC TrustCenter for Security in Data Networks GmbH	249	0.20	226	0.19	6.28
Plesk, Inc.	240	0.19	163	0.13	42.03
GlobalSign nv-sa	191	0.15	177	0.15	4.09
GTE Corporation	151	0.12	142	0.12	2.57
Thawte Certification	137	0.11	137	0.11	-3.54
Ipswitch,Inc.	130	0.10	132	0.11	-5.00
Deutsche Telekom AG	120	0.10	109	0.09	6.20
Advanced Extranet Server	108	0.09	101	0.08	3.15
Kubota Systems Inc.	100	0.08	100	0.08	-3.54
Internet Widgits Pty Ltd	93	0.07	88	0.07	1.94
ispgateway	86	0.07	85	0.07	-2.40
FreeSSL	65	0.05	51	0.04	22.94
*.ceti.pl	58	0.05	59	0.05	-5.17
CyberTrust Japan, Inc.	54	0.04	57	0.05	-8.62
PKI Partner AB	52	0.04	50	0.04	0.32
Ensim Corporation	43	0.03	49	0.04	-15.35
Beocity	42	0.03	40	0.03	1.28
zNET Internet Services	40	0.03	40	0.03	-3.54
Esat Net	40	0.03	41	0.03	-5.89
Webmin Software	39	0.03	33	0.03	14.00
TAIWAN-CA.COM Inc.	37	0.03	36	0.03	-0.86
University of Florida	36	0.03	36	0.03	-3.54
NeoNova B.V.	36	0.03	36	0.03	-3.54
SCNC	34	0.03	32	0.03	2.49
Unizeto Sp. z o.o.	33	0.03	29	0.02	9.77
WebMoney Transfer	31	0.02	29	0.02	3.11
NetLock Halozatbiztonsagi Kft.	31	0.02	27	0.02	10.75
media3	30	0.02	30	0.02	-3.54
Tele Danmark	30	0.02	30	0.02	-3.54
SOGO KEIBI HOSHO CO.LTD	30	0.02	25	0.02	15.75
Franke & Partner	29	0.02	29	0.02	-3.54
XYZ Corporation	28	0.02	24	0.02	12.54
Your Organization	26	0.02	18	0.01	39.33
MDM iNet, LLC	26	0.02	27	0.02	-7.11
HJ.NET	26	0.02	26	0.02	-3.54
Advantagecom Networks, Inc.	26	0.02	24	0.02	4.50
community musician	25	0.02	20	0.02	20.58
Stalker Software, Inc.	25	0.02	23	0.02	4.85
Onyx Internet	25	0.02	26	0.02	-7.25
Positive Software	24	0.02	18	0.01	28.61
IceWarp Software	24	0.02	24	0.02	-3.54
Baltimore Technologies Japan Co.,Ltd.	24	0.02	14	0.01	65.36
Massachusetts Institute of Technology	23	0.02	23	0.02	-3.54
KICA	22	0.02	21	0.02	1.05
University of Maryland	20	0.02	21	0.02	-8.13
DeZines Web Hosting	20	0.02	20	0.02	-3.54
Carnegie Mellon University	20	0.02	20	0.02	-3.54
Sun Microsystems Inc	19	0.02	14	0.01	30.91
Rutgers University	19	0.02	19	0.02	-3.54
BSG	19	0.02	22	0.02	-16.69
XAO Inc.	18	0.01	18	0.01	-3.54
UUNET UK	18	0.01	18	0.01	-3.54
ROOT	18	0.01	0	0.00	N/A
Technische Universitaet Chemnitz	17	0.01	16	0.01	2.49
Sofia Kallin	17	0.01	17	0.01	-3.54
Logacont AG	17	0.01	17	0.01	-3.54
HAL interactive, d.o.o.	17	0.01	17	0.01	-3.54
Web Hosting	16	0.01	18	0.01	-14.26
University of Helsinki	16	0.01	16	0.01	-3.54
KMD	16	0.01	14	0.01	10.24
Indra's Net, Inc.	16	0.01	17	0.01	-9.21
IPS Seguridad CA	16	0.01	24	0.02	-35.69
CNRS	16	0.01	15	0.01	2.89
NIH	15	0.01	17	0.01	-14.89
HDE	15	0.01	14	0.01	3.35
University of Waterloo	14	0.01	14	0.01	-3.54
UniCERT Brasil	14	0.01	0	0.00	N/A
Temp Certificate!	14	0.01	11	0.01	22.77
ServeLinux Networks, Inc.	14	0.01	14	0.01	-3.54
Postecom s.p.a.	14	0.01	13	0.01	3.88
INFN	14	0.01	12	0.01	12.54
Apache HTTP Server	14	0.01	12	0.01	12.54
University of Wisconsin - Stevens Point (UWSP)	13	0.01	13	0.01	-3.54
UNESP	13	0.01	0	0.00	N/A
Sun Cobalt	13	0.01	0	0.00	N/A
Radio Data Group Inc	13	0.01	12	0.01	4.50
Kasetsart University	13	0.01	13	0.01	-3.54
ICS_TREE	13	0.01	0	0.00	N/A
ICP-Brasil	13	0.01	12	0.01	4.50
PVT a.s.	12	0.01	12	0.01	-3.54
OCC	12	0.01	11	0.01	5.23
FNMT	12	0.01	13	0.01	-10.96
Etisalat	12	0.01	12	0.01	-3.54
Dummy certificate	12	0.01	12	0.01	-3.54
DeZines Web Hosting Corporation	12	0.01	12	0.01	-3.54
Aaex Corp.	12	0.01	14	0.01	-17.32
WebEstates Inc.	11	0.01	0	0.00	N/A
RBC	11	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.