<s>
NoScript	B-Operating_System
(	O
or	O
NoScript	B-Operating_System
Security	I-Operating_System
Suite	I-Operating_System
)	O
is	O
a	O
free	B-License
and	I-License
open-source	I-License
extension	B-Protocol
for	O
Firefox	B-Application
-	O
and	O
Chromium-based	O
web	O
browsers	O
,	O
written	O
and	O
maintained	O
by	O
Giorgio	B-Operating_System
Maone	I-Operating_System
,	O
an	O
Italian	O
software	O
developer	O
and	O
member	O
of	O
the	O
Mozilla	B-Operating_System
Security	O
Group	O
.	O
</s>
<s>
By	O
default	O
,	O
NoScript	B-Operating_System
blocks	O
active	O
(	O
executable	O
)	O
web	O
content	O
,	O
which	O
can	O
be	O
wholly	O
or	O
partially	O
unblocked	O
by	O
allowlisting	O
a	O
site	O
or	O
domain	O
from	O
the	O
extension	B-Protocol
's	O
toolbar	O
menu	O
or	O
by	O
clicking	O
a	O
placeholder	O
icon	O
.	O
</s>
<s>
In	O
the	O
default	O
configuration	O
,	O
active	O
content	O
is	O
globally	O
denied	O
,	O
although	O
the	O
user	O
may	O
turn	O
this	O
around	O
and	O
use	O
NoScript	B-Operating_System
to	O
block	O
specific	O
unwanted	O
content	O
.	O
</s>
<s>
Active	O
content	O
may	O
consist	O
of	O
JavaScript	B-Language
,	O
web	O
fonts	O
,	O
media	B-General_Concept
codecs	I-General_Concept
,	O
WebGL	B-Library
,	O
and	O
Flash	B-Operating_System
.	O
</s>
<s>
NoScript	B-Operating_System
is	O
useful	O
for	O
developers	O
to	O
see	O
how	O
well	O
their	O
site	O
works	O
with	O
JavaScript	B-Language
turned	O
off	O
.	O
</s>
<s>
It	O
also	O
can	O
remove	O
many	O
irritating	O
web	O
elements	O
,	O
such	O
as	O
in-page	O
pop-up	O
messages	O
and	O
certain	O
paywalls	O
,	O
which	O
require	O
JavaScript	B-Language
in	O
order	O
to	O
function	O
.	O
</s>
<s>
NoScript	B-Operating_System
takes	O
the	O
form	O
of	O
a	O
toolbar	O
icon	O
or	O
status	O
bar	O
icon	O
in	O
Firefox	B-Application
.	O
</s>
<s>
It	O
displays	O
on	O
every	O
website	O
to	O
denote	O
whether	O
NoScript	B-Operating_System
has	O
either	O
blocked	O
,	O
allowed	O
,	O
or	O
partially	O
allowed	O
scripts	O
to	O
run	O
on	O
the	O
web	O
page	O
being	O
viewed	O
.	O
</s>
<s>
Clicking	O
or	O
hovering	O
(	O
since	O
version	O
2.0.3rc1	O
)	O
the	O
mouse	O
cursor	O
on	O
the	O
NoScript	B-Operating_System
icon	O
gives	O
the	O
user	O
the	O
option	O
to	O
allow	O
or	O
forbid	O
the	O
script	O
's	O
processing	O
.	O
</s>
<s>
NoScript	B-Operating_System
's	O
interface	O
,	O
whether	O
accessed	O
by	O
right-clicking	O
on	O
the	O
web	O
page	O
or	O
the	O
distinctive	O
NoScript	B-Operating_System
box	O
at	O
the	O
bottom	O
of	O
the	O
page	O
(	O
by	O
default	O
)	O
,	O
shows	O
the	O
URL	O
of	O
the	O
script(s )	O
that	O
are	O
blocked	O
,	O
but	O
does	O
not	O
provide	O
any	O
sort	O
of	O
reference	O
to	O
look	O
up	O
whether	O
or	O
not	O
a	O
given	O
script	O
is	O
safe	O
to	O
run	O
.	O
</s>
<s>
On	O
November	O
14	O
,	O
2017	O
,	O
Giorgio	B-Operating_System
Maone	I-Operating_System
announced	O
NoScript	B-Operating_System
10	O
,	O
which	O
will	O
be	O
"	O
very	O
different	O
"	O
from	O
5.x	O
versions	O
,	O
and	O
will	O
use	O
WebExtension	O
technology	O
,	O
making	O
it	O
compatible	O
with	O
Firefox	B-Application
Quantum	O
.	O
</s>
<s>
On	O
November	O
20	O
,	O
2017	O
,	O
Maone	O
released	O
version	O
10.1.1	O
for	O
Firefox	B-Application
57	O
and	O
above	O
.	O
</s>
<s>
NoScript	B-Operating_System
is	O
available	O
for	O
Firefox	B-Application
for	I-Application
Android	I-Application
.	O
</s>
<s>
On	O
April	O
11	O
,	O
2007	O
,	O
NoScript	B-Operating_System
1.1.4.7	O
was	O
publicly	O
released	O
,	O
introducing	O
the	O
first	O
client-side	O
protection	O
against	O
Type	O
0	O
and	O
Type	O
1	O
cross-site	O
scripting	O
(	O
XSS	O
)	O
ever	O
delivered	O
in	O
a	O
web	O
browser	O
.	O
</s>
<s>
Whenever	O
a	O
website	O
tries	O
to	O
inject	O
HTML	O
or	O
JavaScript	B-Language
code	O
inside	O
a	O
different	O
site	O
(	O
a	O
violation	O
of	O
the	O
same-origin	B-Protocol
policy	I-Protocol
)	O
,	O
NoScript	B-Operating_System
filters	O
the	O
malicious	O
request	O
and	O
neutralizes	O
its	O
dangerous	O
payload	O
.	O
</s>
<s>
Similar	O
features	O
have	O
been	O
adopted	O
years	O
later	O
by	O
Microsoft	O
Internet	O
Explorer	O
8	O
and	O
by	O
Google	B-Application
Chrome	I-Application
.	O
</s>
<s>
The	O
Application	O
Boundaries	O
Enforcer	O
(	O
ABE	O
)	O
is	O
a	O
built-in	O
NoScript	B-Operating_System
module	O
meant	O
to	O
harden	O
the	O
web	O
application-oriented	O
protections	O
already	O
provided	O
by	O
NoScript	B-Operating_System
,	O
by	O
delivering	O
a	O
firewall-like	O
component	O
running	O
inside	O
the	O
browser	O
.	O
</s>
<s>
This	O
"	O
firewall	O
"	O
is	O
specialized	O
in	O
defining	O
and	O
guarding	O
the	O
boundaries	O
of	O
each	O
sensitive	O
web	B-Application
application	I-Application
relevant	O
to	O
the	O
user	O
(	O
e.g.	O
,	O
plug-ins	O
,	O
webmail	O
,	O
online	O
banking	O
,	O
and	O
so	O
on	O
)	O
,	O
according	O
to	O
policies	O
defined	O
directly	O
by	O
the	O
user	O
,	O
the	O
web	O
developer/administrator	O
,	O
or	O
a	O
trusted	O
third	O
party	O
.	O
</s>
<s>
In	O
its	O
default	O
configuration	O
,	O
NoScript	B-Operating_System
's	O
ABE	O
provides	O
protection	O
against	O
CSRF	B-Protocol
and	O
DNS	B-Protocol
rebinding	I-Protocol
attacks	O
aimed	O
at	O
intranet	O
resources	O
,	O
such	O
as	O
routers	O
and	O
sensitive	O
web	B-Application
applications	I-Application
.	O
</s>
<s>
NoScript	B-Operating_System
's	O
ClearClick	O
feature	O
,	O
released	O
on	O
October	O
8	O
,	O
2008	O
,	O
prevents	O
users	O
from	O
clicking	O
on	O
invisible	O
or	O
"	O
redressed	O
"	O
page	O
elements	O
of	O
embedded	O
documents	O
or	O
applets	O
,	O
defeating	O
all	O
types	O
of	O
clickjacking	O
(	O
i.e.	O
,	O
from	O
frames	O
and	O
plug-ins	O
)	O
.	O
</s>
<s>
This	O
makes	O
NoScript	B-Operating_System
"	O
the	O
only	O
freely	O
available	O
product	O
which	O
offers	O
a	O
reasonable	O
degree	O
of	O
protection	O
against	O
clickjacking	O
attacks	O
.	O
</s>
<s>
NoScript	B-Operating_System
can	O
force	O
the	O
browser	O
to	O
always	O
use	O
HTTPS	B-Protocol
when	O
establishing	O
connections	O
to	O
some	O
sensitive	O
sites	O
,	O
in	O
order	O
to	O
prevent	O
man-in-the-middle	O
attacks	O
.	O
</s>
<s>
This	O
behavior	O
can	O
be	O
triggered	O
either	O
by	O
the	O
websites	O
themselves	O
,	O
by	O
sending	O
the	O
Strict	B-Protocol
Transport	I-Protocol
Security	I-Protocol
header	O
,	O
or	O
configured	O
by	O
users	O
for	O
those	O
websites	O
that	O
do	O
n't	O
support	O
Strict	B-Protocol
Transport	I-Protocol
Security	I-Protocol
yet	O
.	O
</s>
<s>
NoScript	B-Operating_System
's	O
HTTPS	B-Protocol
enhancement	O
features	O
have	O
been	O
used	O
by	O
the	O
Electronic	O
Frontier	O
Foundation	O
as	O
the	O
basis	O
of	O
its	O
HTTPS	B-Operating_System
Everywhere	I-Operating_System
add-on	O
.	O
</s>
<s>
PC	O
World	O
chose	O
NoScript	B-Operating_System
as	O
one	O
of	O
the	O
100	O
Best	O
Products	O
of	O
2006	O
.	O
</s>
<s>
In	O
2008	O
,	O
NoScript	B-Operating_System
won	O
com	O
's	O
"	O
Best	O
Security	O
Add-On	O
"	O
editorial	O
award	O
.	O
</s>
<s>
In	O
2010	O
,	O
NoScript	B-Operating_System
was	O
"	O
The	O
Reader	O
's	O
Choice	O
Awards	O
"	O
winner	O
in	O
the	O
"	O
Best	O
Privacy/Security	O
Add-On	O
"	O
category	O
at	O
About.com	O
.	O
</s>
<s>
In	O
2011	O
,	O
for	O
the	O
second	O
year	O
in	O
a	O
row	O
,	O
NoScript	B-Operating_System
was	O
"	O
The	O
Reader	O
's	O
Choice	O
Awards	O
"	O
winner	O
in	O
the	O
"	O
Best	O
Privacy/Security	O
Add-On	O
"	O
category	O
at	O
About.com	O
.	O
</s>
<s>
NoScript	B-Operating_System
was	O
the	O
2011	O
(	O
first	O
edition	O
)	O
winner	O
of	O
the	O
Dragon	O
Research	O
Group	O
's	O
"	O
Security	O
Innovation	O
Grant	O
"	O
.	O
</s>
<s>
In	O
May	O
2009	O
,	O
it	O
was	O
reported	O
that	O
an	O
"	O
extension	B-Protocol
war	O
"	O
had	O
broken	O
out	O
between	O
NoScript	B-Operating_System
's	O
developer	O
,	O
Giorgio	B-Operating_System
Maone	I-Operating_System
,	O
and	O
the	O
developers	O
of	O
the	O
Firefox	B-Application
ad-blocking	O
extension	B-Protocol
Adblock	B-Application
Plus	I-Application
after	O
Maone	O
released	O
a	O
version	O
of	O
NoScript	B-Operating_System
that	O
circumvented	O
a	O
block	O
enabled	O
by	O
an	O
AdBlock	B-Application
Plus	I-Application
filter	O
.	O
</s>
<s>
After	O
mounting	O
criticism	O
and	O
a	O
declaration	O
by	O
the	O
administrators	O
of	O
the	O
Mozilla	B-Operating_System
Add-ons	O
site	O
that	O
the	O
site	O
would	O
change	O
its	O
guidelines	O
regarding	O
add-on	O
modifications	O
,	O
Maone	O
removed	O
the	O
code	O
and	O
issued	O
a	O
full	O
apology	O
.	O
</s>
<s>
In	O
the	O
immediate	O
aftermath	O
of	O
the	O
Adblock	B-Application
Plus	I-Application
incident	O
,	O
a	O
spat	O
arose	O
between	O
Maone	O
and	O
the	O
developers	O
of	O
the	O
Ghostery	B-Operating_System
add-on	O
after	O
Maone	O
implemented	O
a	O
change	O
on	O
his	O
website	O
that	O
disabled	O
the	O
notification	O
Ghostery	B-Operating_System
used	O
to	O
report	O
web	B-Protocol
tracking	I-Protocol
software	I-Protocol
.	O
</s>
<s>
This	O
was	O
interpreted	O
as	O
an	O
attempt	O
to	O
"	O
prevent	O
Ghostery	B-Operating_System
from	O
reporting	O
on	O
trackers	O
and	O
ad	O
networks	O
on	O
NoScript	B-Operating_System
's	O
websites	O
"	O
.	O
</s>
<s>
In	O
response	O
,	O
Maone	O
stated	O
that	O
the	O
change	O
was	O
made	O
because	O
Ghostery	B-Operating_System
's	O
notification	O
obscured	O
the	O
donation	O
button	O
on	O
the	O
NoScript	B-Operating_System
site	O
.	O
</s>
<s>
This	O
conflict	O
was	O
resolved	O
when	O
Maone	O
changed	O
his	O
site	O
's	O
CSS	B-Language
to	O
move	O
—	O
rather	O
than	O
disable	O
—	O
the	O
Ghostery	B-Operating_System
notification	O
.	O
</s>
