Tokens: This
finding
would
have
rendered
it
unnecessary
to
determine
whether
the
measure
in
question
was
necessary
in
a
democratic
society
,
because
that
test
depends
on
the
existence
of
a
legitimate
aim
.
If
,
however
,
the
Court
had
preferred
to
accept
the
existence
of
a
legitimate
national
security
aim
,
it
would
have
recalled
that
States
do
not
enjoy
unlimited
discretion
to
subject
individuals
to
secret
surveillance
or
a
system
of
secret
files
.
The
interest
of
a
State
in
protecting
its
national
security
must
be
balanced
against
the
seriousness
of
the
interference
with
an
applicant
's
right
to
respect
for
his
or
her
private
life
.
Our
Court
has
repeatedly
stressed
“
the
risk
that
a
system
of
secret
surveillance
for
the
protection
of
national
security
poses
of
undermining
or
even
destroying
democracy
on
the
ground
of
defending
it
”
(
see
the
Leander
v.
Sweden
judgment
of
26
March
1987
,
Series
A
no
.
116
,
p.
25
,
§
60
;
see
also
the
Klass
and
Others
v.
Germany
judgment
of
6
September
1978
,
Series
A
no
.
28
,
pp
.
21
and
23
,
§
§
42
and
49
,
and
,
mutatis
mutandis
,
the
Chahal
v.
the
United
Kingdom
judgment
of
15
November
1996
,
Reports
1996
-
V
,
pp
.
1866
-
67
,
§
131
,
and
the
Tinnelly
&
Sons
Ltd
and
Others
and
McElduff
and
Others
v.
the
United
Kingdom
judgment
of
10
July
1998
,
Reports
1998
-
IV
,
pp
.
1662
-
63
,
§
77
)
.
This
is
why
the
Court
must
be
satisfied
that
the
secret
surveillance
of
citizens
is
strictly
necessary
for
safeguarding
democratic
institutions
and
that
there
exist
adequate
and
effective
safeguards
against
its
abuse
.
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