<s>
Java	B-Language
Anon	I-Language
Proxy	I-Language
(	O
JAP	O
)	O
also	O
known	O
as	O
JonDonym	B-Language
,	O
was	O
a	O
proxy	B-Application
system	O
designed	O
to	O
allow	O
browsing	O
the	O
Web	O
with	O
revocable	O
pseudonymity	O
.	O
</s>
<s>
The	O
client-software	O
is	O
written	O
in	O
the	O
Java	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
Cross-platform	B-Operating_System
and	O
free	O
,	O
it	O
sends	O
requests	O
through	O
a	O
Mix	O
Cascade	O
and	O
mixes	O
the	O
data	O
streams	O
of	O
multiple	O
users	O
in	O
order	O
to	O
further	O
obfuscate	O
the	O
data	O
to	O
outsiders	O
.	O
</s>
<s>
JonDonym	B-Language
is	O
available	O
for	O
all	O
platforms	O
that	O
support	O
Java	B-Language
.	O
</s>
<s>
Furthermore	O
,	O
ANONdroid	O
is	O
a	O
JonDonym	B-Language
proxy	B-Application
client	O
for	O
Android	B-Application
.	O
</s>
<s>
The	O
JonDonym	B-Language
client	O
program	O
allows	O
the	O
user	O
to	O
choose	O
among	O
several	O
Mix	O
Cascades	O
(	O
i.e.	O
</s>
<s>
This	O
is	O
different	O
from	O
peer-to-peer	O
based	O
anonymity	B-Application
networks	I-Application
like	O
Tor	B-Application
and	O
I2P	B-Protocol
,	O
whose	O
anonymization	O
proxies	O
are	O
anonymous	O
themselves	O
,	O
which	O
means	O
the	O
users	O
have	O
to	O
rely	O
on	O
unknown	O
proxy	B-Application
operators	O
.	O
</s>
<s>
However	O
,	O
it	O
means	O
that	O
all	O
the	O
relays	O
used	O
for	O
JonDonym-mediated	O
connections	O
are	O
known	O
and	O
identified	O
,	O
and	O
therefore	O
potentially	O
targeted	O
very	O
easily	O
by	O
hackers	O
,	O
governmental	O
agencies	O
or	O
lobbying	O
groups	O
.	O
</s>
<s>
As	O
discussed	O
below	O
,	O
solutions	O
like	O
international	O
distribution	O
of	O
the	O
relays	O
and	O
the	O
additional	O
use	O
of	O
Tor	B-Application
can	O
somewhat	O
mitigate	O
this	O
loss	O
of	O
independence	O
.	O
</s>
<s>
Use	O
of	O
JonDonym	B-Language
has	O
been	O
(	O
and	O
still	O
is	O
)	O
free	O
,	O
but	O
since	O
financial	O
backing	O
of	O
the	O
original	O
university	O
research	O
project	O
ran	O
out	O
on	O
22	O
June	O
2007	O
,	O
a	O
startup	O
,	O
Jondos	O
GmbH	O
,	O
was	O
founded	O
by	O
members	O
of	O
the	O
original	O
project	O
team	O
.	O
</s>
<s>
As	O
a	O
consequence	O
,	O
the	O
JAP	O
client	O
has	O
been	O
renamed	O
to	O
JonDo	B-Language
and	O
the	O
service	O
itself	O
from	O
AN.ON	O
to	O
JonDonym	B-Language
.	O
</s>
<s>
JonDonym	B-Language
mix	O
cascades	O
are	O
mostly	O
operated	O
by	O
SMEs	O
in	O
multiple	O
countries	O
and	O
mix	O
cascades	O
always	O
include	O
three	O
mix	O
servers	O
for	O
advanced	O
security	O
.	O
</s>
<s>
Since	O
May	O
2006	O
,	O
JonDonym	B-Language
can	O
also	O
be	O
used	O
as	O
a	O
client	O
for	O
the	O
Tor	B-Application
network	I-Application
and	O
since	O
2006	O
also	O
for	O
the	O
Mixminion	B-Protocol
network	O
.	O
</s>
