<s>
Project	B-Application
Shield	I-Application
is	O
an	O
anti-distributed-denial-of-service	O
(	O
anti-DDoS	O
)	O
service	O
that	O
is	O
offered	O
by	O
Jigsaw	O
,	O
a	O
subsidiary	O
of	O
Google	B-Application
,	O
to	O
websites	O
that	O
have	O
"	O
media	O
,	O
elections	O
,	O
and	O
human	O
rights	O
related	O
content.	O
"	O
</s>
<s>
Google	B-Application
initially	O
announced	O
Project	B-Application
Shield	I-Application
at	O
their	O
Ideas	O
Conference	O
on	O
October	O
21	O
,	O
2013	O
.	O
</s>
<s>
The	O
service	O
was	O
initially	O
only	O
offered	O
to	O
trusted	O
testers	O
,	O
but	O
on	O
February	O
25	O
,	O
2016	O
,	O
Google	B-Application
opened	O
up	O
the	O
service	O
to	O
any	O
qualifying	O
website	O
a	O
Google-owned	O
reverse	O
proxy	O
that	O
identifies	O
and	O
filters	O
malicious	O
traffic	O
.	O
</s>
