<s>
ByLock	B-Application
was	O
a	O
smartphone	O
application	O
that	O
allowed	O
users	O
to	O
communicate	O
via	O
a	O
private	O
,	O
encrypted	O
connection	O
.	O
</s>
<s>
It	O
was	O
launched	O
in	O
2014	O
on	O
Google	B-Application
Play	I-Application
,	O
Apple	B-Application
App	I-Application
Store	I-Application
,	O
BlackBerry	B-Application
OS	I-Application
,	O
and	O
Windows	B-Protocol
Phone	I-Protocol
.	O
</s>
<s>
In	O
an	O
interview	O
with	O
Hürriyet	O
Daily	O
News	O
,	O
Keynes	O
stated	O
that	O
the	O
developer	O
of	O
ByLock	B-Application
was	O
a	O
former	O
flatmate	O
of	O
his	O
,	O
who	O
had	O
used	O
Keynes	O
 '	O
credit	O
card	O
to	O
publish	O
the	O
app	O
on	O
the	O
Apple	B-Application
App	I-Application
Store	I-Application
.	O
</s>
<s>
Keynes	O
also	O
said	O
that	O
ByLock	B-Application
had	O
not	O
been	O
available	O
since	O
January	O
2016	O
.	O
</s>
<s>
Users	O
of	O
ByLock	B-Application
were	O
deemed	O
terrorists	O
in	O
Turkish	O
courts	O
.	O
</s>
<s>
According	O
to	O
Deutsche	O
Welle	O
,	O
of	O
the	O
215,000	O
former	O
ByLock	B-Application
users	O
,	O
an	O
estimated	O
23,000	O
have	O
been	O
detained	O
by	O
Turkish	O
authorities	O
.	O
</s>
<s>
Some	O
believe	O
that	O
the	O
MİT	O
and	O
other	O
Turkish	O
authorities	O
manipulated	O
the	O
ByLock	B-Application
database	O
in	O
order	O
to	O
arrest	O
suspected	O
members	O
of	O
the	O
Gülen	O
Movement	O
.	O
</s>
<s>
Tuncay	O
Besikci	O
,	O
a	O
computer	O
forensic	O
expert	O
in	O
Turkey	O
,	O
emphasized	O
that	O
"	O
the	O
demands	O
to	O
investigate	O
and	O
analyze	O
ByLock	B-Application
data	O
from	O
independent	O
institutions	O
is	O
refused	O
by	O
the	O
Turkish	O
courts	O
.	O
</s>
<s>
In	O
December	O
2017	O
,	O
Turkish	O
authorities	O
revealed	O
that	O
almost	O
half	O
the	O
people	O
who	O
had	O
been	O
prosecuted	O
for	O
having	O
ByLock	B-Application
on	O
their	O
smartphones	O
would	O
have	O
their	O
legal	O
cases	O
reviewed	O
,	O
as	O
they	O
could	O
have	O
been	O
redirected	O
to	O
the	O
app	O
without	O
their	O
knowledge	O
.	O
</s>
