<s>
Tampermonkey	B-Operating_System
is	O
a	O
donationware	B-License
userscript	B-Language
manager	I-Language
that	O
is	O
available	O
as	O
a	O
browser	B-Protocol
extension	I-Protocol
.	O
</s>
<s>
This	O
software	O
enables	O
the	O
user	O
to	O
add	O
and	O
use	O
userscripts	B-Language
,	O
which	O
are	O
JavaScript	B-Language
programs	O
that	O
can	O
be	O
used	O
to	O
modify	O
web	O
pages	O
.	O
</s>
<s>
Tampermonkey	B-Operating_System
was	O
first	O
created	O
in	O
May	O
2010	O
by	O
Jan	O
Biniok	O
.	O
</s>
<s>
It	O
first	O
emerged	O
as	O
a	O
Greasemonkey	B-Operating_System
userscript	B-Language
that	O
was	O
wrapped	O
to	O
support	O
Google	B-Application
Chrome	I-Application
.	O
</s>
<s>
Eventually	O
the	O
code	O
was	O
re-used	O
and	O
published	O
as	O
a	O
standalone	O
extension	O
for	O
Chrome	B-Application
which	O
had	O
more	O
features	O
than	O
Chrome	B-Application
's	O
native	O
script	O
support	O
.	O
</s>
<s>
In	O
2011	O
,	O
Tampermonkey	B-Operating_System
was	O
ported	O
to	O
Android	B-Application
,	O
enabling	O
users	O
to	O
use	O
userscripts	B-Language
on	O
Android	B-Application
's	O
internal	O
browser	O
.	O
</s>
<s>
By	O
2019	O
,	O
Tampermonkey	B-Operating_System
had	O
over	O
10	O
million	O
users	O
.	O
</s>
<s>
Tampermonkey	B-Operating_System
is	O
one	O
of	O
33	O
extensions	O
on	O
the	O
Chrome	B-Application
Web	I-Application
Store	I-Application
to	O
have	O
at	O
least	O
10	O
million	O
users	O
.	O
</s>
<s>
In	O
January	O
2019	O
,	O
Biniok	O
wrote	O
in	O
a	O
Google	B-Application
Groups	I-Application
post	O
that	O
the	O
new	O
Chrome	B-Application
manifest	O
V3	O
would	O
break	O
the	O
extension	O
.	O
</s>
<s>
The	O
new	O
manifest	O
would	O
ban	O
remotely	O
accessed	O
code	O
which	O
Tampermonkey	B-Operating_System
is	O
dependent	O
on	O
.	O
</s>
<s>
The	O
userscripts	B-Language
use	O
code	O
that	O
is	O
created	O
by	O
developers	O
not	O
at	O
Google	B-Application
,	O
and	O
instead	O
is	O
created	O
by	O
third-party	O
developers	O
at	O
places	O
like	O
Userscripts.org	O
and	O
Greasyfork	O
.	O
</s>
<s>
On	O
January	O
6	O
,	O
2019	O
,	O
Opera	B-Application
banned	O
the	O
Tampermonkey	B-Operating_System
extension	O
from	O
being	O
installed	O
through	O
the	O
Chrome	B-Application
Web	I-Application
Store	I-Application
,	O
claiming	O
it	O
had	O
been	O
identified	O
as	O
malicious	O
.	O
</s>
<s>
Later	O
,	O
Bleeping	O
Computer	O
was	O
able	O
to	O
determine	O
that	O
a	O
piece	O
of	O
adware	O
called	O
Gom	O
Player	O
would	O
install	O
the	O
Chrome	B-Application
Web	I-Application
Store	I-Application
version	O
of	O
Tampermonkey	B-Operating_System
and	O
likely	O
utilize	O
the	O
extension	O
to	O
facilitate	O
the	O
injection	O
of	O
ads	O
or	O
other	O
malicious	O
behavior	O
.	O
</s>
<s>
The	O
site	O
stated	O
,	O
"	O
This	O
does	O
not	O
mean	O
that	O
Tampermonkey	B-Operating_System
is	O
malicious	O
,	O
but	O
rather	O
that	O
a	O
malicious	O
program	O
is	O
utilizing	O
a	O
legitimate	O
program	O
for	O
bad	O
behavior	O
,	O
"	O
going	O
on	O
to	O
call	O
Opera	B-Application
's	O
blacklisting	O
the	O
extension	O
for	O
this	O
reason	O
a	O
"	O
strange	O
decision	O
"	O
.	O
</s>
