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 2010 Count	May 2010 %	April 2010 Count	April 2010 %	Growth %
Equifax (Geotrust)	165,616	24.84	162,796	24.92	-0.34
GoDaddy.com, Inc.	95,574	14.33	92,451	14.15	1.27
Verisign	83,594	12.54	83,071	12.72	-1.42
Thawte	63,395	9.51	62,516	9.57	-0.66
Comodo Limited	45,342	6.80	44,977	6.89	-1.24
DigiCert	17,688	2.65	16,638	2.55	4.15
Unknown	16,054	2.41	15,554	2.38	1.11
Network Solutions L.L.C.	14,222	2.13	13,862	2.12	0.51
Comodo CA Limited	12,220	1.83	11,999	1.84	-0.23
GlobalSign	11,297	1.69	11,005	1.68	0.56
COMODO CA Limited	11,075	1.66	10,612	1.62	2.24
GlobalSign nv-sa	10,908	1.64	10,615	1.63	0.67
Starfield Technologies, Inc.	10,653	1.60	10,349	1.58	0.84
Entrust, Inc.	5,890	0.88	5,525	0.85	4.44
SecureTrust Corporation	5,509	0.83	5,405	0.83	-0.15
SomeOrganization	3,985	0.60	3,929	0.60	-0.64
TERENA	3,588	0.54	3,431	0.53	2.45
Alpha	2,836	0.43	2,504	0.38	10.95
SWsoft, Inc.	2,820	0.42	2,850	0.44	-3.07
Entrust.net	2,815	0.42	2,984	0.46	-7.58
Betrusted Japan Co., Ltd.	2,648	0.40	2,625	0.40	-1.18
Parallels	2,440	0.37	2,341	0.36	2.11
Cybertrust	2,215	0.33	2,251	0.34	-3.60
SECOM Trust Systems CO.,LTD.	1,952	0.29	1,897	0.29	0.81
Root CA	1,828	0.27	1,820	0.28	-1.60
Akamai Technologies Inc	1,811	0.27	1,735	0.27	2.26
StartCom Ltd.	1,468	0.22	1,343	0.21	7.08
SECOM Trust.net	1,398	0.21	1,390	0.21	-1.47
Secure Business Services, Inc.	1,265	0.19	1,268	0.19	-2.27
Snake Oil, Ltd	1,255	0.19	1,271	0.19	-3.27
U.S. Government	1,217	0.18	1,167	0.18	2.16
Servision Inc.	1,178	0.18	1,141	0.17	1.14
CAcert Inc.	1,177	0.18	1,123	0.17	2.68
thawte, Inc.	1,107	0.17	1,056	0.16	2.70
ips Certification Authority	1,009	0.15	995	0.15	-0.66
Unizeto Technologies S.A.	1,006	0.15	973	0.15	1.29
T-Systems Enterprise Services GmbH	772	0.12	761	0.12	-0.62
ispgateway	765	0.11	755	0.12	-0.74
GTE Corporation	695	0.10	701	0.11	-2.87
Google Inc	673	0.10	645	0.10	2.22
UIC	653	0.10	639	0.10	0.11
Firstserver, Inc.	650	0.10	654	0.10	-2.63
Trusted Secure Certificate Authority	647	0.10	626	0.10	1.25
TC TrustCenter GmbH	618	0.09	574	0.09	5.47
Register.com	592	0.09	552	0.08	5.06
GeoTrust Inc	591	0.09	571	0.09	1.40
Cybertrust Inc	546	0.08	533	0.08	0.35
QuoVadis Limited	497	0.07	459	0.07	6.08
none	452	0.07	429	0.07	3.22
NetLock Halozatbiztonsagi Kft.	437	0.07	428	0.07	0.02
Firstserver, Inc	397	0.06	395	0.06	-1.54
OCC	352	0.05	352	0.05	-2.04
TC TrustCenter for Security in Data Networks GmbH	336	0.05	357	0.05	-7.80
Sonera	336	0.05	330	0.05	-0.25
IPS Certification Authority s.l.	332	0.05	334	0.05	-2.62
GANDI SAS	317	0.05	292	0.04	6.35
National Institute of Informatics	312	0.05	290	0.04	5.40
suresupport.com	309	0.05	305	0.05	-0.75
TBS INTERNET	293	0.04	291	0.04	-1.36
TAIWAN-CA.COM Inc.	293	0.04	285	0.04	0.71
WTF ALFA	289	0.04	282	0.04	0.40
FNMT	279	0.04	275	0.04	-0.61
EUNETIC GmbH	272	0.04	255	0.04	4.50
Parallels, Inc.	270	0.04	258	0.04	2.52
OVH SAS	257	0.04	240	0.04	4.90
TDC	250	0.04	248	0.04	-1.24
Internet Widgits Pty Ltd	249	0.04	249	0.04	-2.04
ICP-Brasil	240	0.04	236	0.04	-0.37
SonicWALL, Inc.	205	0.03	200	0.03	0.41
InterWorx	205	0.03	191	0.03	5.15
WebSpace-Forum, Thomas Wendt	203	0.03	201	0.03	-1.06
GLOBE HOSTING CERTIFICATION AUTHORITY	203	0.03	179	0.03	11.10
Apache HTTP Server	201	0.03	203	0.03	-3.00
Digi-Sign Limited	198	0.03	198	0.03	-2.04
AusCERT	195	0.03	179	0.03	6.72
RBC Hosting Center	185	0.03	173	0.03	4.76
America Online Inc.	170	0.03	173	0.03	-3.73
AddTrust AB	167	0.03	170	0.03	-3.76
Positive Software	164	0.02	162	0.02	-0.83
OptimumSSL CA	159	0.02	127	0.02	22.65
Zimbra Collaboration Suite	154	0.02	145	0.02	4.05
My Company Ltd	154	0.02	156	0.02	-3.29
RM	153	0.02	154	0.02	-2.67
SiteGround LLC.	147	0.02	139	0.02	3.60
TNC	143	0.02	143	0.02	-2.04
Trustwave Holdings, Inc.	141	0.02	140	0.02	-1.34
CNRS	139	0.02	143	0.02	-4.78
Getronics PinkRoccade Nederland B.V.	138	0.02	133	0.02	1.65
XRamp Security Services Inc	137	0.02	131	0.02	2.45
New Dream Network, LLC.	124	0.02	124	0.02	-2.04
Sun Microsystems Inc	118	0.02	114	0.02	1.40
Government of Korea	116	0.02	100	0.02	13.64
MULTICERT-CA	110	0.02	106	0.02	1.66
XX	107	0.02	107	0.02	-2.04
Wells Fargo	105	0.02	104	0.02	-1.09
Unizeto Sp. z o.o.	103	0.02	103	0.02	-2.04
Default Web Site	102	0.02	103	0.02	-2.99
DigiNotar B.V.	101	0.02	100	0.02	-1.06
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH	101	0.02	102	0.02	-3.00
WoSign, Inc.	100	0.01	106	0.02	-7.58

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.