<s>
JailbreakMe	B-Operating_System
is	O
a	O
series	O
of	O
jailbreaks	B-Application
for	O
Apple	O
's	O
iOS	B-Application
mobile	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
that	O
took	O
advantage	O
of	O
flaws	O
in	O
the	O
Safari	B-Application
browser	I-Application
on	O
the	O
device	O
,	O
providing	O
an	O
immediate	O
one-step	O
jailbreak	B-Application
,	O
unlike	O
more	O
common	O
jailbreaks	B-Application
,	O
such	O
as	O
Blackra1n	B-Operating_System
and	O
redsn0w	O
,	O
that	O
require	O
plugging	O
the	O
device	O
into	O
a	O
computer	O
and	O
running	O
the	O
jailbreaking	B-Application
software	O
from	O
the	O
desktop	O
.	O
</s>
<s>
JailbreakMe	B-Operating_System
included	O
Cydia	B-Device
,	O
a	O
package	O
management	O
interface	O
that	O
serves	O
as	O
an	O
alternative	O
to	O
the	O
App	B-Application
Store	I-Application
.	O
</s>
<s>
JailbreakMe	B-Operating_System
's	O
first	O
version	O
in	O
2007	O
worked	O
on	O
iPhone	B-Operating_System
and	O
iPod	B-Operating_System
Touch	I-Operating_System
firmware	O
1.1.1	O
,	O
the	O
second	O
version	O
was	O
released	O
in	O
August	O
2010	O
for	O
firmware	O
4.0.1	O
and	O
earlier	O
,	O
and	O
the	O
third	O
and	O
final	O
version	O
was	O
released	O
in	O
July	O
2011	O
for	O
iOS	B-Application
versions	O
4.3	O
to	O
4.3.3	O
(	O
and	O
was	O
the	O
first	O
jailbreak	B-Application
for	O
the	O
iPad	B-Operating_System
2	I-Operating_System
)	O
.	O
</s>
<s>
JailbreakMe	B-Operating_System
3.0	O
has	O
been	O
used	O
to	O
jailbreak	B-Application
at	O
least	O
two	O
million	O
devices	O
.	O
</s>
<s>
JailbreakMe	B-Operating_System
,	O
started	O
in	O
2007	O
,	O
was	O
originally	O
used	O
to	O
jailbreak	B-Application
the	O
iPhone	B-Operating_System
and	O
iPod	B-Operating_System
Touch	I-Operating_System
running	O
the	O
1.1.1	O
version	O
of	O
iOS	B-Application
,	O
then	O
named	O
iPhone	B-Operating_System
OS	O
.	O
</s>
<s>
Using	O
a	O
TIFF	O
exploit	O
against	O
Safari	B-Application
,	O
it	O
installed	O
Installer.app	B-Operating_System
.	O
</s>
<s>
JailbreakMe	B-Operating_System
2.0	O
"	O
Star	O
"	O
,	O
released	O
by	O
comex	O
on	O
August	O
1	O
,	O
2010	O
,	O
exploited	O
a	O
vulnerability	O
in	O
the	O
FreeType	B-Application
library	O
used	O
while	O
rendering	O
PDF	O
files	O
.	O
</s>
<s>
This	O
was	O
the	O
first	O
publicly	O
available	O
jailbreak	B-Application
for	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
,	O
able	O
to	O
jailbreak	B-Application
iOS	B-Application
3.1.2	O
through	O
4.0.1	O
on	O
the	O
iPhone	B-Operating_System
,	O
iPod	B-Operating_System
Touch	I-Operating_System
,	O
and	O
iPad	B-Operating_System
models	O
then	O
current	O
.	O
</s>
<s>
This	O
jailbreak	B-Application
was	O
activated	O
by	O
visiting	O
the	O
jailbreakme.com	O
web	O
page	O
on	O
the	O
device	O
's	O
Safari	B-Application
web	I-Application
browser	I-Application
.	O
</s>
<s>
The	O
vulnerability	O
used	O
by	O
JailbreakMe	B-Operating_System
2.0	O
was	O
patched	O
by	O
Apple	O
in	O
iOS	B-Application
4.0.2	O
.	O
</s>
<s>
JailbreakMe	B-Operating_System
3.0	O
"	O
Saffron	O
"	O
,	O
released	O
on	O
July	O
6	O
,	O
2011	O
,	O
will	O
jailbreak	B-Application
most	O
iOS	B-Application
devices	O
on	O
iOS	B-Application
4.3-4.3.3	O
and	O
iPad	B-Operating_System
2	I-Operating_System
on	O
4.3.3	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
publicly	O
available	O
jailbreak	B-Application
for	O
iPad	B-Operating_System
2	I-Operating_System
.	O
</s>
<s>
JailbreakMe	B-Operating_System
3.0	O
exploited	O
a	O
FreeType	B-Application
parser	O
security	O
flaw	O
(	O
similar	O
to	O
JailbreakMe	B-Operating_System
2.0	O
)	O
,	O
using	O
the	O
form	O
of	O
a	O
PDF	O
file	O
rendered	O
by	O
Mobile	O
Safari	B-Application
,	O
which	O
then	O
used	O
a	O
kernel	O
vulnerability	O
to	O
complete	O
the	O
untethered	O
jailbreak	B-Application
.	O
</s>
<s>
Comex	O
also	O
released	O
a	O
patch	O
for	O
this	O
FreeType	B-Application
flaw	O
,	O
named	O
PDF	O
Patcher	O
2	O
,	O
which	O
is	O
available	O
as	O
a	O
free	O
package	O
installable	O
via	O
Cydia	B-Device
.	O
</s>
<s>
A	O
few	O
days	O
before	O
the	O
initial	O
release	O
,	O
a	O
beta	O
tester	O
leaked	O
JailbreakMe	B-Operating_System
3.0	O
to	O
the	O
public	O
.	O
</s>
<s>
The	O
JailbreakMe	B-Operating_System
website	O
looked	O
similar	O
to	O
downloading	O
an	O
App	B-Application
Store	I-Application
app	O
.	O
</s>
<s>
It	O
included	O
a	O
blue	O
button	O
indicating	O
"	O
FREE	O
"	O
,	O
which	O
changed	O
into	O
a	O
green	O
"	O
INSTALL	O
"	O
button	O
when	O
pressed	O
once	O
,	O
much	O
like	O
an	O
application	O
on	O
the	O
App	B-Application
Store	I-Application
.	O
</s>
<s>
After	O
tapping	O
"	O
INSTALL	O
"	O
,	O
Safari	B-Application
would	O
close	O
,	O
Cydia	B-Device
would	O
load	O
as	O
a	O
new	O
app	O
,	O
and	O
the	O
device	O
would	O
be	O
jailbroken	B-Application
with	O
no	O
reboot	O
necessary	O
.	O
</s>
<s>
On	O
July	O
15	O
,	O
2011	O
,	O
Apple	O
released	O
iOS	B-Application
4.3.4	O
(	O
GSM	O
)	O
and	O
4.2.9	O
(	O
CDMA	O
)	O
to	O
patch	O
the	O
flaws	O
used	O
by	O
JailbreakMe	B-Operating_System
.	O
</s>
<s>
JailbreakMe	B-Operating_System
4.0	O
,	O
released	O
by	O
tihmstar	O
on	O
December	O
12	O
,	O
2017	O
,	O
exploited	O
three	O
serious	O
vulnerabilities	O
(	O
)	O
,	O
already	O
utilized	O
by	O
a	O
spyware	O
named	O
Pegasus	O
.	O
</s>
<s>
It	O
was	O
mainly	O
based	O
on	O
HomeDepot	O
,	O
a	O
semi-untethered	O
jailbreak	B-Application
released	O
by	O
jk9357	O
.	O
</s>
<s>
As	O
for	O
HomeDepot	O
,	O
it	O
targeted	O
all	O
the	O
32-bit	O
devices	O
between	O
iOS	B-Application
9.1	O
and	O
iOS	B-Application
9.3.4	O
.	O
</s>
<s>
The	O
vulnerabilities	O
used	O
by	O
HomeDepot	O
and	O
JailbreakMe	B-Operating_System
4.0	O
were	O
patched	O
by	O
Apple	O
in	O
iOS	B-Application
9.3.5	O
.	O
</s>
<s>
The	O
jailbreak	B-Application
was	O
hosted	O
by	O
Chris	O
Wade	O
(	O
creator	O
of	O
Corellium	O
)	O
at	O
.	O
</s>
<s>
Whilst	O
technically	O
semi-untethered	O
,	O
the	O
jailbreak	B-Application
could	O
be	O
made	O
fully	O
untethered	O
with	O
the	O
use	O
of	O
tihmstar	O
's	O
UntetherHomeDepot	O
package	O
.	O
</s>
<s>
TotallyNotSpyware	O
,	O
created	O
by	O
the	O
JakeBlair420	O
team	O
,	O
released	O
on	O
7	O
September	O
2018	O
,	O
is	O
a	O
JailBreakMe-style	O
exploit	O
that	O
works	O
on	O
any	O
64-bit	O
device	O
running	O
iOS	B-Application
10	O
.	O
</s>
<s>
As	O
with	O
JailbreakMe	B-Operating_System
4.0	O
,	O
the	O
web	B-Application
browser	I-Application
is	O
induced	O
to	O
sideload	O
Cydia	B-Device
using	O
a	O
payload	O
,	O
either	O
Meridian	O
or	O
the	O
doubleH3lix	O
.	O
</s>
<s>
On	O
October	O
7	O
,	O
2011	O
,	O
Conceited	O
Apps	O
,	O
which	O
had	O
been	O
allowing	O
Comex	O
to	O
use	O
the	O
domain	O
name	O
for	O
hosting	O
,	O
sold	O
the	O
domain	O
name	O
jailbreakme.com	O
to	O
an	O
allegedly	O
"	O
unknown	O
"	O
party	O
.	O
</s>
