<s>
Self-XSS	B-Protocol
(	O
self	O
cross-site	O
scripting	O
)	O
is	O
a	O
social	O
engineering	O
attack	O
used	O
to	O
gain	O
control	O
of	O
victims	O
 '	O
web	O
accounts	O
.	O
</s>
<s>
In	O
a	O
Self-XSS	B-Protocol
attack	O
,	O
the	O
victim	O
of	O
the	O
attack	O
unknowingly	O
runs	O
malicious	O
code	O
in	O
their	O
own	O
web	O
browser	O
,	O
thus	O
exposing	O
personal	O
information	O
to	O
the	O
attacker	O
,	O
a	O
kind	O
of	O
vulnerability	O
known	O
as	O
cross-site	O
scripting	O
.	O
</s>
<s>
Self-XSS	B-Protocol
operates	O
by	O
tricking	O
users	O
also	O
into	O
copying	O
and	O
pasting	O
malicious	O
content	O
into	O
their	O
browsers	O
 '	O
web	B-Application
developer	I-Application
console	I-Application
.	O
</s>
<s>
In	O
the	O
past	O
,	O
a	O
very	O
similar	O
attack	O
took	O
place	O
,	O
in	O
which	O
users	O
were	O
tricked	O
into	O
pasting	O
malicious	O
JavaScript	B-Language
into	O
their	O
address	O
bar	O
.	O
</s>
<s>
When	O
browser	O
vendors	O
stopped	O
this	O
by	O
preventing	O
easily	O
running	O
JavaScript	B-Language
from	O
the	O
address	O
bar	O
,	O
attackers	O
started	O
using	O
Self-XSS	B-Protocol
in	O
its	O
current	O
form	O
.	O
</s>
<s>
Firefox	B-Application
and	O
Google	B-Application
Chrome	I-Application
have	O
both	O
begun	O
implementing	O
safeguards	O
to	O
warn	O
users	O
about	O
Self-XSS	B-Protocol
attacks	O
.	O
</s>
<s>
Facebook	B-Application
and	O
others	O
now	O
display	O
a	O
warning	O
message	O
when	O
users	O
open	O
the	O
web	B-Application
developer	I-Application
console	I-Application
,	O
and	O
they	O
link	O
to	O
pages	O
explaining	O
the	O
attack	O
in	O
detail	O
.	O
</s>
<s>
However	O
,	O
the	O
attacks	O
do	O
not	O
have	O
much	O
else	O
in	O
common	O
,	O
because	O
XSS	O
is	O
an	O
attack	O
against	O
the	O
website	O
itself	O
(	O
which	O
users	O
cannot	O
protect	O
themselves	O
against	O
but	O
can	O
be	O
fixed	O
by	O
the	O
site	O
operator	O
making	O
their	O
site	O
more	O
secure	O
)	O
,	O
whereas	O
Self-XSS	B-Protocol
is	O
a	O
social	O
engineering	O
attack	O
against	O
the	O
user	O
(	O
against	O
which	O
savvy	O
users	O
can	O
protect	O
themselves	O
but	O
the	O
site	O
operator	O
cannot	O
prevent	O
)	O
.	O
</s>
