<s>
For	O
example	O
,	O
a	O
semi-protected	O
or	O
fully	O
protected	O
page	O
can	O
be	O
edited	O
only	O
by	O
accounts	O
that	O
meet	O
certain	O
account	O
age	O
and	O
activity	O
thresholds	O
or	O
administrators	B-Application
respectively	O
.	O
</s>
<s>
Protecting	O
articles	O
so	O
only	O
established	O
users	O
,	O
or	O
in	O
some	O
cases	O
,	O
only	O
administrators	B-Application
can	O
edit	O
them	O
.	O
</s>
<s>
Fully	O
protected	O
articles	O
are	O
those	O
that	O
can	O
be	O
edited	O
only	O
by	O
administrators	B-Application
.	O
</s>
<s>
An	O
administrator	B-Application
familiar	O
with	O
the	O
protection	O
guidelines	O
chooses	O
whether	O
or	O
not	O
to	O
fulfill	O
this	O
request	O
based	O
on	O
the	O
guidelines	O
.	O
</s>
<s>
The	O
"	O
abuse	O
filter	O
"	O
extension	O
,	O
which	O
uses	O
regular	B-Language
expressions	I-Language
to	O
detect	O
common	O
vandalism	O
terms	O
.	O
</s>
<s>
After	O
this	O
,	O
other	O
users	O
may	O
place	O
additional	O
warnings	O
,	O
though	O
only	O
administrators	B-Application
can	O
carry	O
out	O
the	O
block	O
.	O
</s>
<s>
The	O
most	O
well-known	O
"	O
bot	O
"	O
that	O
fights	O
vandalism	O
is	O
ClueBot	B-Protocol
NG	I-Protocol
.	O
</s>
<s>
The	O
MediaWiki	O
title	O
blacklist	O
extension	O
prevents	O
page	O
move	O
vandalism	O
and	O
creation	O
vandalism	O
by	O
using	O
regular	B-Language
expressions	I-Language
to	O
identify	O
bad	O
titles	O
.	O
</s>
<s>
Titles	O
on	O
the	O
blacklist	O
can	O
only	O
be	O
created	O
by	O
or	O
moved	O
to	O
by	O
administrators	B-Application
.	O
</s>
<s>
The	O
edit	O
filter	O
can	O
also	O
prevent	O
vandalism	O
by	O
disallowing	O
the	O
bad	O
edit	O
altogether	O
,	O
or	O
by	O
allowing	O
only	O
autoconfirmed	O
users	O
or	O
administrators	B-Application
to	O
perform	O
the	O
edit	O
.	O
</s>
<s>
After	O
Colbert	O
's	O
request	O
and	O
his	O
viewers	O
 '	O
subsequent	O
actions	O
,	O
all	O
these	O
articles	O
were	O
put	O
under	O
by	O
Wikipedia	B-Application
administrators	I-Application
,	O
with	O
editing	O
restricted	O
to	O
established	O
users	O
.	O
</s>
<s>
In	O
April	O
2014	O
,	O
the	O
Liverpool	O
Echo	O
reported	O
that	O
computers	O
on	O
an	O
intranet	B-General_Concept
used	O
by	O
the	O
British	O
government	O
had	O
been	O
used	O
to	O
post	O
offensive	O
remarks	O
about	O
the	O
Hillsborough	O
disaster	O
on	O
Wikipedia	O
pages	O
relating	O
to	O
the	O
subject	O
.	O
</s>
<s>
The	O
article	O
on	O
Donald	O
Trump	O
was	O
replaced	O
with	O
a	O
single	O
sentence	O
critical	O
of	O
him	O
in	O
July	O
2015	O
,	O
and	O
in	O
November	O
2018	O
,	O
the	O
lead	O
picture	O
on	O
the	O
page	O
was	O
replaced	O
with	O
an	O
image	O
of	O
a	O
penis	O
,	O
causing	O
Apple	O
's	O
virtual	O
assistant	O
Siri	B-Application
to	O
briefly	O
include	O
this	O
image	O
in	O
answers	O
to	O
queries	O
about	O
the	O
subject	O
.	O
</s>
<s>
On	O
24	O
July	O
2018	O
,	O
Utah	O
senator	O
Orrin	O
Hatch	O
posted	O
humorous	O
tweets	O
after	O
Google	B-Application
claimed	O
that	O
he	O
had	O
died	O
on	O
11	O
September	O
2017	O
,	O
with	O
the	O
error	O
being	O
traced	O
back	O
to	O
an	O
edit	O
to	O
his	O
Wikipedia	O
article	O
.	O
</s>
<s>
Similarly	O
,	O
vandalism	O
of	O
the	O
California	O
Republican	O
Party	O
's	O
Wikipedia	O
page	O
caused	O
Google	B-Application
's	I-Application
information	O
bar	O
to	O
list	O
Nazism	O
as	O
one	O
of	O
the	O
party	O
's	O
primary	O
ideologies	O
.	O
</s>
<s>
These	O
edits	O
were	O
captured	O
and	O
automatically	O
posted	O
publicly	O
to	O
Twitter	B-Application
by	O
an	O
automated	O
account	O
.	O
</s>
<s>
Twitter	B-Application
shortly	O
removed	O
the	O
posts	O
and	O
suspended	O
the	O
account	O
in	O
response	O
to	O
the	O
incident	O
.	O
</s>
<s>
On	O
25	O
April	O
2018	O
,	O
various	O
pages	O
related	O
to	O
American	O
video	O
game	O
director	O
Todd	O
Howard	O
were	O
vandalized	O
after	O
a	O
post	O
went	O
viral	O
on	O
Tumblr	B-Application
stating	O
that	O
his	O
page	O
would	O
no	O
longer	O
be	O
semi-protected	O
as	O
of	O
said	O
date	O
.	O
</s>
<s>
These	O
included	O
""	O
(	O
the	O
most	O
popular	O
game	O
he	O
worked	O
on	O
)	O
,	O
""	O
(	O
his	O
hometown	O
)	O
,	O
and	O
""	O
(	O
after	O
a	O
Wikipedia	B-Application
administrator	I-Application
who	O
reversed	O
the	O
vandalism	O
)	O
.	O
</s>
