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	May 2003 Count	May 2003 %	April 2003 Count	April 2003 %	Growth %
Verisign	55,708	41.34	51,702	41.02	0.78
Thawte	32,611	24.20	31,546	25.03	-3.31
Equifax (Geotrust)	17,079	12.67	15,259	12.11	4.69
Unknown	4,085	3.03	3,982	3.16	-4.05
Comodo Limited	3,721	2.76	2,520	2.00	38.11
Snake Oil, Ltd	2,084	1.55	1,915	1.52	1.79
SomeOrganization	1,534	1.14	1,447	1.15	-0.84
U.S. Government	991	0.74	978	0.78	-5.23
Entrust.net	894	0.66	864	0.69	-3.22
Plesk Inc.	558	0.41	610	0.48	-14.44
The USERTRUST Network	497	0.37	448	0.36	3.76
Plesk, Inc.	316	0.23	240	0.19	23.15
Equifax Secure Inc	307	0.23	660	0.52	-56.49
TC TrustCenter for Security in Data Networks GmbH	271	0.20	249	0.20	1.80
GlobalSign nv-sa	195	0.14	191	0.15	-4.51
Ipswitch,Inc.	152	0.11	130	0.10	9.36
GTE Corporation	150	0.11	151	0.12	-7.09
Thawte Certification	136	0.10	137	0.11	-7.15
Deutsche Telekom AG	131	0.10	120	0.10	2.11
FreeSSL	129	0.10	65	0.05	85.62
Kubota Systems Inc.	99	0.07	100	0.08	-7.40
Advanced Extranet Server	96	0.07	108	0.09	-16.86
ispgateway	89	0.07	86	0.07	-3.21
Internet Widgits Pty Ltd	79	0.06	93	0.07	-20.55
*.ceti.pl	58	0.04	58	0.05	-6.47
PKI Partner AB	51	0.04	52	0.04	-8.27
CyberTrust Japan, Inc.	49	0.04	54	0.04	-15.13
Beocity	42	0.03	42	0.03	-6.47
Ensim Corporation	41	0.03	43	0.03	-10.82
Webmin Software	39	0.03	39	0.03	-6.47
TAIWAN-CA.COM Inc.	37	0.03	37	0.03	-6.47
University of Florida	36	0.03	36	0.03	-6.47
SOGO KEIBI HOSHO CO.LTD	36	0.03	30	0.02	12.24
Esat Net	36	0.03	40	0.03	-15.82
Unizeto Sp. z o.o.	35	0.03	33	0.03	-0.80
NetLock Halozatbiztonsagi Kft.	35	0.03	31	0.02	5.60
NeoNova B.V.	35	0.03	36	0.03	-9.07
community musician	34	0.03	25	0.02	27.20
SCNC	34	0.03	34	0.03	-6.47
Positive Software	33	0.02	24	0.02	28.61
WebMoney Transfer	32	0.02	31	0.02	-3.45
Tele Danmark	31	0.02	30	0.02	-3.35
XYZ Corporation	30	0.02	28	0.02	0.21
Baltimore Technologies Japan Co.,Ltd.	30	0.02	24	0.02	16.91
media3	29	0.02	30	0.02	-9.59
Franke & Partner	29	0.02	29	0.02	-6.47
Stalker Software, Inc.	26	0.02	25	0.02	-2.73
IceWarp Software	26	0.02	24	0.02	1.33
HJ.NET	26	0.02	26	0.02	-6.47
Onyx Internet	25	0.02	25	0.02	-6.47
Advantagecom Networks, Inc.	25	0.02	26	0.02	-10.07
zNET Internet Services	22	0.02	40	0.03	-48.56
Massachusetts Institute of Technology	22	0.02	23	0.02	-10.53
MDM iNet, LLC	22	0.02	26	0.02	-20.86
KICA	22	0.02	22	0.02	-6.47
ROOT	21	0.02	18	0.01	9.12
Your Organization	20	0.01	26	0.02	-28.05
University of Maryland	20	0.01	20	0.02	-6.47
DeZines Web Hosting	20	0.01	20	0.02	-6.47
Sun Microsystems Inc	19	0.01	19	0.02	-6.47
Rutgers University	19	0.01	19	0.02	-6.47
Temp Certificate!	18	0.01	14	0.01	20.25
Technische Universitaet Chemnitz	18	0.01	17	0.01	-0.97
Stargate.Net, Inc.	18	0.01	0	0.00	N/A
BSG	18	0.01	19	0.02	-11.39
NIH	17	0.01	15	0.01	6.00
KMD	17	0.01	16	0.01	-0.62
HAL interactive, d.o.o.	17	0.01	17	0.01	-6.47
CNRS	17	0.01	16	0.01	-0.62
Web Hosting	16	0.01	16	0.01	-6.47
University of Helsinki	16	0.01	16	0.01	-6.47
Sun Cobalt	16	0.01	13	0.01	15.12
OCC	16	0.01	12	0.01	24.71
Logacont AG	16	0.01	17	0.01	-11.97
Linux Test Server	16	0.01	0	0.00	N/A
Indra's Net, Inc.	16	0.01	16	0.01	-6.47
Carnegie Mellon University	16	0.01	20	0.02	-25.17
Aaex Corp.	16	0.01	12	0.01	24.71
UUNET UK	15	0.01	18	0.01	-22.06
HDE	15	0.01	15	0.01	-6.47
UNESP	14	0.01	13	0.01	0.73
ServeLinux Networks, Inc.	14	0.01	14	0.01	-6.47
PVT a.s.	14	0.01	12	0.01	9.12
INFN	14	0.01	14	0.01	-6.47
ICS_TREE	14	0.01	13	0.01	0.73
ICP-Brasil	14	0.01	13	0.01	0.73
FNMT	14	0.01	12	0.01	9.12
Apache HTTP Server	14	0.01	14	0.01	-6.47
University of Wisconsin - Stevens Point (UWSP)	13	0.01	13	0.01	-6.47
UniCERT Brasil	13	0.01	14	0.01	-13.15
Radio Data Group Inc	13	0.01	13	0.01	-6.47
RBC	13	0.01	11	0.01	10.54
3501256 Canada Inc.	13	0.01	0	0.00	N/A
WebEstates Inc.	12	0.01	11	0.01	2.03
Postecom s.p.a.	12	0.01	14	0.01	-19.83
Kasetsart University	12	0.01	13	0.01	-13.66
Etisalat	12	0.01	12	0.01	-6.47
Dummy certificate	12	0.01	12	0.01	-6.47
University of Bristol	11	0.01	0	0.00	N/A
Swiss-Web GmbH	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.