<s>
InstallCore	B-Application
was	O
an	O
installation	B-Operating_System
and	O
content	O
distribution	O
platform	O
created	O
by	O
ironSource	O
,	O
including	O
a	O
software	B-Application
development	I-Application
kit	I-Application
(	O
SDK	O
)	O
for	O
Windows	B-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
The	O
program	O
allowed	O
those	O
using	O
it	O
for	O
distribution	O
to	O
include	O
monetization	O
by	O
advertisements	O
,	O
charging	O
for	O
installation	B-Operating_System
,	O
etc	O
.	O
</s>
<s>
and	O
took	O
pains	O
to	O
make	O
its	O
installations	O
invisible	O
to	O
the	O
user	O
and	O
to	O
anti-virus	B-Application
software	I-Application
.	O
</s>
<s>
The	O
platform	O
,	O
and	O
programs	O
using	O
it	O
,	O
have	O
been	O
rated	O
potentially	B-Application
unwanted	I-Application
programs	I-Application
(	O
PUP	O
)	O
or	O
potentially	B-Application
unwanted	I-Application
applications	I-Application
(	O
PUA	O
)	O
by	O
anti-malware	B-Application
product	O
vendors	O
since	O
2014	O
,	O
and	O
by	O
Windows	B-Application
Defender	I-Application
Antivirus	I-Application
since	O
2015	O
.	O
</s>
<s>
installCore	B-Application
was	O
managing	O
100	O
million	O
installations	O
every	O
month	O
,	O
offering	O
services	O
for	O
paid	O
,	O
unpaid	O
and	O
free	O
software	O
(	O
using	O
the	O
SDK	O
version	O
)	O
.	O
</s>
<s>
installCore	B-Application
was	O
a	O
product	O
of	O
ironSource	O
,	O
which	O
is	O
headquartered	O
in	O
Tel	O
Aviv	O
with	O
offices	O
in	O
San	O
Francisco	O
,	O
California	O
in	O
the	O
United	O
States	O
,	O
and	O
Beijing	O
,	O
China	O
.	O
</s>
<s>
InstallCore	B-Application
was	O
discontinued	O
as	O
part	O
of	O
a	O
company	O
flotation	O
in	O
late	O
2020	O
.	O
</s>
<s>
The	O
InstallCore	B-Application
team	O
introduced	O
the	O
first	O
version	O
of	O
the	O
SDK	O
at	O
the	O
beginning	O
of	O
2011	O
,	O
the	O
SDK	O
was	O
a	O
fork	O
of	O
the	O
FoxTab	O
installer	B-Operating_System
and	O
had	O
only	O
basic	O
Installation	B-Operating_System
features	O
.	O
</s>
<s>
InstallCore	B-Application
development	O
platform	O
provides	O
a	O
software	B-Application
development	I-Application
kit	I-Application
(	O
SDK	O
)	O
based	O
on	O
JavaScript	B-Language
and	O
HTML/HTML	O
5.0	O
.	O
</s>
<s>
Installation	B-Operating_System
projects	O
can	O
be	O
compiled	O
into	O
a	O
windows	B-Application
executable	O
file	O
and	O
used	O
for	O
software	O
installation	B-Operating_System
and	O
distribution	O
.	O
</s>
<s>
Version	O
2.1	O
introduced	O
a	O
fully	O
customizable	O
design	O
interface	O
based	O
on	O
HTML	B-Language
,	O
CSS	O
,	O
and	O
a	O
JavaScript	B-Language
SDK	O
.	O
</s>
<s>
Since	O
installCore	B-Application
version	O
4.10	O
the	O
SDK	O
integrated	O
12	O
fully	O
pre-designed	O
templates	O
and	O
a	O
customization	O
tool	O
to	O
create	O
a	O
WYSIWYG	B-Application
design	O
.	O
</s>
<s>
The	O
program	O
has	O
features	O
supporting	O
generation	O
of	O
revenue	O
for	O
users	O
by	O
advertising	O
,	O
charging	O
for	O
program	O
installation	B-Operating_System
,	O
etc	O
.	O
</s>
<s>
Full	O
Windows	B-Application
API	O
support	O
,	O
including	O
full	O
file	O
system	O
and	O
registry	O
access	O
,	O
loading	O
and	O
execution	O
of	O
dynamic	O
link	O
libraries	O
and	O
executing	O
files	O
.	O
</s>
<s>
The	O
installCore	B-Application
compiler	O
program	O
HtmlUiMaker	O
uses	O
a	O
make	O
script	O
,	O
such	O
as	O
the	O
following	O
example	O
,	O
in	O
order	O
to	O
compile	O
a	O
JavaScript	B-Language
and	O
HTML	B-Language
skin	O
into	O
executable	O
installation	B-Operating_System
programs	O
.	O
</s>
<s>
installCore	B-Application
and	O
software	O
packages	O
relying	O
on	O
it	O
have	O
been	O
classified	O
as	O
potentially	B-Application
unwanted	I-Application
programs	I-Application
(	O
PUP	O
)	O
or	O
potentially	B-Application
unwanted	I-Application
applications	I-Application
(	O
PUA	O
)	O
,	O
by	O
anti-malware	B-Application
product	O
vendors	O
and	O
Windows	B-Application
Defender	I-Application
Antivirus	I-Application
from	O
2014-2015	O
onwards	O
,	O
with	O
many	O
stating	O
that	O
it	O
installs	O
adware	O
and	O
other	O
additional	O
PUPs	O
.	O
</s>
<s>
Malwarebytes	B-Language
identified	O
the	O
program	O
as	O
"	O
a	O
family	O
of	O
bundlers	O
that	O
installs	O
more	O
than	O
one	O
application	O
on	O
the	O
user	O
's	O
computer	O
"	O
.	O
</s>
<s>
The	O
generated	O
installer	B-Operating_System
is	O
a	O
Portable	O
Executable	O
which	O
contains	O
the	O
installation	B-Operating_System
script	O
.	O
</s>
<s>
The	O
installer	B-Operating_System
can	O
be	O
configured	O
to	O
function	O
as	O
full	O
installer	B-Operating_System
or	O
a	O
bootstrap	O
installer	B-Operating_System
.	O
</s>
<s>
As	O
the	O
installation	B-Operating_System
script	O
is	O
compiled	O
,	O
it	O
cannot	O
be	O
obtained	O
from	O
the	O
delivered	O
executable	O
without	O
reverse-engineering	O
the	O
binary	O
.	O
</s>
<s>
As	O
of	O
version	O
3.1	O
of	O
the	O
official	O
release	O
installCore	B-Application
fully	O
supported	O
both	O
Unicode	O
and	O
RTL	O
but	O
depended	O
on	O
Windows	B-Application
2000	O
with	O
SP	O
4	O
as	O
a	O
minimum	O
requirement	O
to	O
accurately	O
present	O
the	O
UI	O
.	O
</s>
