<s>
Evasi0n	B-Operating_System
,	O
(	O
stylized	O
as	O
"	O
evasi0n	B-Operating_System
"	O
)	O
,	O
is	O
a	O
untethered	O
jailbreak	B-Application
program	O
for	O
iOS	O
6.0	O
-	O
6.1.2	O
and	O
for	O
iOS	O
7.0	O
-	O
7.0.6	O
(	O
with	O
evasi0n7	B-Operating_System
)	O
.	O
</s>
<s>
More	O
than	O
seven	O
million	O
copies	O
of	O
Evasi0n	B-Operating_System
were	O
downloaded	O
in	O
the	O
first	O
four	O
days	O
after	O
release	O
.	O
</s>
<s>
On	O
22	O
December	O
2013	O
,	O
the	O
evad3rs	O
released	O
a	O
new	O
version	O
of	O
evasi0n	B-Operating_System
that	O
supports	O
iOS	O
7.x	O
,	O
known	O
as	O
evasi0n7	B-Operating_System
.	O
</s>
<s>
One	O
major	O
exploit	O
used	O
by	O
this	O
jailbreak	B-Application
was	O
patched	O
by	O
Apple	O
with	O
the	O
4th	O
beta	O
of	O
iOS	O
7.1	O
and	O
two	O
more	O
with	O
beta	O
5	O
.	O
</s>
<s>
The	O
final	O
release	O
of	O
iOS	O
7.1	O
fixed	O
all	O
the	O
exploits	O
used	O
by	O
evasi0n7	B-Operating_System
.	O
</s>
<s>
The	O
evasi0n	B-Operating_System
jailbreak	B-Application
first	O
remounts	O
the	O
root	O
file	O
system	O
as	O
read-write	O
and	O
then	O
achieves	O
persistence	O
by	O
editing	O
the	O
/etc/launchd.conf	O
file	O
,	O
which	O
launchd	B-Application
consults	O
.	O
</s>
<s>
Evasi0n	B-Operating_System
then	O
applies	O
patches	O
in	O
the	O
kernel	O
,	O
bypassing	O
address	O
space	O
layout	O
randomization	O
by	O
triggering	O
a	O
data	O
fault	O
and	O
reconstructing	O
the	O
kernel	O
slide	O
by	O
reading	O
the	O
faulting	O
instruction	O
from	O
the	O
appropriate	O
ARM	O
exception	B-General_Concept
vector	I-General_Concept
.	O
</s>
<s>
PCMag	O
reported	O
that	O
evasi0n	B-Operating_System
checks	O
whether	O
it	O
is	O
running	O
on	O
a	O
Chinese-language	O
computer	O
,	O
and	O
,	O
if	O
so	O
,	O
installs	O
Taiji	O
,	O
a	O
Chinese	O
app	O
makret	O
,	O
rather	O
than	O
Cydia	B-Device
.	O
</s>
