Tokens: 22
.
Section
56
of
the
National
Security
Act
provides
an
exhaustive
list
of
special
investigation
techniques
,
which
include
search
and
surveillance
of
dwellings
,
interception
of
mail
and
electronic
communications
and
computer
and
network
data
interception
.
However
,
section
58
does
not
provide
a
maximum
time
limit
for
the
surveillance
measures
,
as
paragraph
231
of
Roman
Zakharov
laid
down[41
]
.
It
only
foresees
a
maximum
period
of
90
days
for
each
request
,
with
the
possibility
of
unlimited
renewals
being
open
to
the
Minister
of
Justice
.
Furthermore
,
the
Minister
of
Justice
has
no
access
to
the
results
of
the
ongoing
surveillance
operation
when
he
or
she
is
called
upon
to
decide
on
its
prolongation
,
which
evidently
facilitates
the
mere
rubber
-
stamping
of
the
prolongation
request
.
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