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1
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1
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p
h
is
h
in
g
attac
k
s
.
W
h
ile
p
r
ev
io
u
s
s
tu
d
ies
in
v
esti
g
ated
th
e
im
p
ac
t
o
f
p
h
is
h
in
g
attac
k
s
o
n
s
o
cial
m
ed
ia
p
latf
o
r
m
s
[
1
4
]
–
[
1
6
]
,
th
ey
d
i
d
n
o
t
ex
p
licitly
ad
d
r
ess
th
eir
in
f
lu
en
ce
o
n
tech
n
ical
a
u
th
en
t
icatio
n
m
eth
o
d
s
in
s
y
s
tem
s
,
th
u
s
leav
in
g
g
ap
s
in
u
n
d
er
s
tan
d
in
g
th
e
v
u
ln
er
ab
ilit
ies
o
f
e
-
co
m
m
er
ce
p
latf
o
r
m
s
.
T
h
er
ef
o
r
e,
t
h
is
s
tu
d
y
aim
s
to
f
ill
th
is
g
a
p
b
y
an
aly
zin
g
e
-
co
m
m
er
ce
s
ec
u
r
ity
ag
ain
s
t
th
e
r
is
k
o
f
p
h
is
h
in
g
attac
k
s
u
s
in
g
th
e
s
o
cial
-
en
g
in
ee
r
to
o
lk
it
(
SET
)
ap
p
licatio
n
.
T
h
e
s
elec
tio
n
o
f
SET
as
a
test
in
g
to
o
l
is
b
ased
o
n
its
s
u
p
er
i
o
r
f
le
x
ib
ilit
y
co
m
p
ar
ed
to
o
th
er
p
h
is
h
in
g
to
o
ls
s
u
ch
as
Z
p
h
is
h
er
,
So
cialFis
h
,
an
d
Hid
d
en
E
y
e.
Un
lik
e
th
o
s
e
to
o
ls
,
wh
ich
ar
e
s
tatic
an
d
lim
ited
to
th
e
p
r
o
v
id
e
d
s
o
cial
m
ed
ia
tem
p
lates,
SET
allo
w
s
s
y
n
tax
/p
ar
am
eter
cu
s
to
m
izatio
n
an
d
r
ep
l
icatio
n
o
f
p
h
is
h
in
g
p
ag
es
th
at
m
im
ic
th
e
latest
lo
o
k
o
f
th
e
tar
g
et
p
latf
o
r
m
.
T
h
is
f
lex
ib
ilit
y
m
ak
es
SET
m
o
r
e
ef
f
ec
tiv
e
in
co
n
d
u
ctin
g
p
h
is
h
in
g
attac
k
s
,
id
en
tify
in
g
v
u
ln
e
r
ab
ilit
ies
in
e
-
co
m
m
er
ce
p
latf
o
r
m
s
,
an
d
s
u
p
p
o
r
tin
g
wh
ite
h
at
ac
tiv
ities
in
test
in
g
p
latf
o
r
m
s
ec
u
r
ity
th
r
o
u
g
h
s
im
u
lated
p
h
is
h
in
g
attac
k
s
[
1
7
]
–
[
2
2
]
.
Sp
ec
if
ically
,
th
is
r
e
s
ea
r
ch
will a
n
aly
ze
wh
eth
er
e
-
c
o
m
m
er
ce
p
latf
o
r
m
s
ca
n
b
e
r
ep
licated
to
tr
ap
u
s
er
s
in
to
en
ter
in
g
th
eir
p
er
s
o
n
al
in
f
o
r
m
atio
n
,
s
u
ch
as
u
s
er
n
am
e
an
d
p
ass
wo
r
d
,
d
u
r
in
g
th
e
lo
g
i
n
p
r
o
ce
s
s
.
T
h
u
s
,
th
e
r
esu
lts
o
f
th
is
r
esear
ch
ca
n
p
r
o
v
id
e
im
p
o
r
tan
t
g
u
id
an
ce
f
o
r
p
latf
o
r
m
o
wn
er
s
an
d
d
ev
elo
p
er
s
to
im
p
r
o
v
e
s
ec
u
r
ity
m
ec
h
an
is
m
s
an
d
b
u
ild
a
p
latf
o
r
m
to
av
o
id
th
e
r
is
k
o
f
p
h
is
h
in
g
attac
k
s
.
I
n
a
d
d
itio
n
,
th
e
r
esu
lts
o
f
th
is
s
tu
d
y
ar
e
also
ex
p
ec
ted
to
b
e
a
r
ef
er
en
ce
f
o
r
u
s
er
s
in
ch
o
o
s
in
g
a
m
o
r
e
s
ec
u
r
e
e
-
c
o
m
m
er
ce
p
latf
o
r
m
.
T
h
is
s
tu
d
y
co
n
tr
ib
u
tes
to
th
e
th
eo
r
etica
l
u
n
d
e
r
s
tan
d
in
g
o
f
p
h
is
h
in
g
v
u
ln
er
ab
ilit
ies
in
e
-
co
m
m
er
ce
p
latf
o
r
m
s
b
y
p
r
o
v
id
in
g
a
co
m
p
r
eh
en
s
iv
e
an
aly
s
is
u
s
in
g
SET
.
Pra
ctica
lly
,
it
o
f
f
er
s
ac
tio
n
ab
le
in
s
ig
h
ts
f
o
r
im
p
r
o
v
in
g
e
-
co
m
m
e
r
ce
p
latf
o
r
m
s
ec
u
r
ity
,
wh
ich
ca
n
h
elp
r
e
d
u
c
e
th
e
r
is
k
o
f
cy
b
er
c
r
im
e.
Fro
m
a
m
an
ag
em
e
n
t
p
er
s
p
ec
tiv
e,
th
e
f
in
d
i
n
g
s
ca
n
g
u
id
e
d
ec
is
io
n
-
m
ak
in
g
p
r
o
ce
s
s
es
f
o
r
im
p
lem
en
tin
g
r
o
b
u
s
t
s
ec
u
r
ity
m
ea
s
u
r
es.
Fu
r
th
er
m
o
r
e
,
th
e
s
tu
d
y
h
as
s
o
cieta
l
an
d
s
u
s
tain
ab
ilit
y
im
p
li
ca
tio
n
s
b
y
p
r
o
m
o
tin
g
s
af
er
d
i
g
ital
en
v
ir
o
n
m
en
ts
an
d
f
o
s
ter
in
g
tr
u
s
t in
e
-
c
o
m
m
e
r
ce
p
latf
o
r
m
s
,
w
h
ich
ar
e
ess
en
tial f
o
r
s
u
s
tain
ab
le
ec
o
n
o
m
ic
g
r
o
wth
.
2.
RE
S
E
ARCH
M
E
T
H
O
D
T
h
e
m
eth
o
d
u
s
ed
in
th
is
r
esea
r
ch
is
ac
tio
n
r
esear
ch
.
T
h
is
m
eth
o
d
was
f
ir
s
t
p
u
t
f
o
r
war
d
in
1
9
46
[
2
3
]
.
Ku
r
t
L
ewin
h
as
ar
g
u
ed
[
2
4
]
t
h
at
th
e
ac
tio
n
r
esear
ch
m
eth
o
d
is
u
s
ed
to
test
,
d
ev
el
o
p
,
f
i
n
d
,
an
d
cr
ea
te
n
ew
ac
tio
n
s
s
o
th
at
if
t
h
ese
ac
tio
n
s
ar
e
ap
p
lied
in
wo
r
k
,
th
e
im
p
l
em
en
tatio
n
p
r
o
ce
s
s
will
b
e
ea
s
ier
an
d
f
aster
a
n
d
th
e
r
esu
lts
will
b
e
o
f
h
ig
h
er
q
u
ality
.
T
h
e
p
r
o
ce
s
s
in
clu
d
es
f
iv
e
s
tag
es:
d
iag
n
o
s
is
,
p
lan
n
in
g
,
ac
tio
n
,
ev
alu
atio
n
,
an
d
lear
n
in
g
,
w
h
ich
ar
e
co
n
d
u
cted
s
y
s
tem
atica
lly
to
b
e
s
cien
tific
ally
v
alid
an
d
r
eliab
le
[
2
5
]
–
[
3
0
]
.
T
h
is
m
eth
o
d
was
c
h
o
s
en
b
ec
au
s
e
th
e
s
tag
es
ar
e
s
tr
u
ctu
r
ed
a
n
d
r
elev
an
t
to
ad
d
r
ess
in
g
s
ec
u
r
it
y
ch
allen
g
es
o
n
e
-
co
m
m
er
ce
p
latf
o
r
m
s
.
T
h
e
d
iag
n
o
s
is
s
tag
e
b
eg
in
s
with
th
e
id
en
tific
atio
n
o
f
th
e
m
a
in
p
r
o
b
lem
as
th
e
b
asis
f
o
r
th
e
r
esear
ch
,
in
clu
d
in
g
d
ata
co
llectio
n
a
n
d
s
am
p
le
s
elec
tio
n
.
T
h
e
d
ata
co
llectio
n
tec
h
n
iq
u
e
was
co
n
d
u
cted
th
r
o
u
g
h
a
liter
atu
r
e
s
tu
d
y
(
d
o
cu
m
en
tatio
n
)
b
y
r
e
v
iewin
g
r
ele
v
an
t
l
iter
atu
r
e
f
r
o
m
s
cien
tific
jo
u
r
n
als,
b
o
o
k
s
,
an
d
ac
ad
em
ic
d
atab
ases
s
u
ch
as
Go
o
g
le
Sch
o
la
r
.
T
h
e
s
am
p
le
s
elec
tio
n
u
s
ed
a
p
u
r
p
o
s
iv
e
s
am
p
lin
g
tech
n
i
q
u
e
b
ased
o
n
th
e
cr
iter
ia
o
f
e
-
co
m
m
er
ce
p
latf
o
r
m
s
th
at
ar
e
a
ctiv
e
an
d
p
o
p
u
lar
in
I
n
d
o
n
es
ia
[
3
1
]
.
T
h
en
,
th
e
n
u
m
b
er
o
f
s
am
p
les
will
b
e
d
e
ter
m
in
ed
b
ased
o
n
th
e
th
eo
r
y
f
ir
s
t
p
u
t
f
o
r
war
d
in
1
9
9
6
[
3
2
]
.
Hig
g
in
s
an
d
Sten
s
[
3
3
]
h
as
ar
g
u
ed
t
h
at
th
e
id
ea
l
s
am
p
le
s
ize
in
r
esear
ch
r
an
g
es
f
r
o
m
3
0
to
5
0
0
to
o
b
tain
a
d
i
s
tr
ib
u
tio
n
o
f
v
alu
es
clo
s
er
to
th
e
n
o
r
m
al
cu
r
v
e.
T
h
is
r
esear
ch
is
f
o
cu
s
ed
o
n
test
in
g
th
e
c
o
n
f
i
d
en
tiality
(
C
)
asp
ec
t
o
f
th
e
co
n
f
id
en
tiality
,
i
n
teg
r
ity
,
a
n
d
av
ailab
ilit
y
(
C
I
A
)
t
r
iad
th
eo
r
y
o
n
s
ev
er
al
e
-
c
o
m
m
er
ce
p
latf
o
r
m
s
[
3
4
]
.
T
h
e
p
lan
n
in
g
s
tag
e
in
cl
u
d
es
s
tep
s
th
at
will
b
e
tak
en
to
o
v
er
co
m
e
t
h
e
p
r
o
b
lem
s
th
at
h
av
e
b
ee
n
p
r
ev
io
u
s
ly
i
d
en
tifie
d
at
t
h
e
d
i
ag
n
o
s
is
s
tag
e.
I
n
th
is
s
tag
e,
t
h
e
au
th
o
r
will
m
ak
e
p
la
n
s
r
elate
d
to
th
e
ac
tio
n
s
to
b
e
tak
en
in
co
n
d
u
ctin
g
test
s
,
s
u
ch
as
s
elec
tin
g
SET
a
s
th
e
r
ig
h
t
to
o
ls
to
co
n
d
u
ct
test
s
,
ty
p
es
o
f
attac
k
s
to
b
e
u
s
ed
,
m
ea
s
u
r
i
n
g
t
h
e
ef
f
ec
tiv
en
ess
o
f
SET
ap
p
licatio
n
s
in
co
n
d
u
ctin
g
test
s
,
an
d
th
e
n
u
m
b
er
o
f
iter
atio
n
s
p
er
f
o
r
m
ed
d
u
r
i
n
g
test
in
g
.
Af
ter
all
th
e
p
lan
s
ar
e
m
ad
e,
it
is
h
o
p
ed
th
at
th
e
test
in
g
p
r
o
ce
s
s
ca
n
r
u
n
well
an
d
p
r
o
v
id
e
a
co
m
p
r
eh
en
s
iv
e
p
ict
u
r
e
o
f
t
h
e
s
ec
u
r
ity
o
f
th
e
p
lat
f
o
r
m
b
ein
g
test
ed
.
T
h
is
is
d
o
n
e
to
id
en
tify
ev
e
r
y
asp
ec
t
o
f
p
o
ten
tial
v
u
ln
er
ab
ilit
ies
s
o
th
at
th
e
r
es
u
lts
o
b
tain
ed
ca
n
b
e
a
r
e
f
er
en
ce
in
d
ev
elo
p
in
g
an
d
im
p
r
o
v
in
g
p
latf
o
r
m
s
ec
u
r
ity
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J Ad
v
Ap
p
l Sci
I
SS
N:
2252
-
8
8
1
4
S
ec
u
r
ity
a
n
a
lysi
s
o
f I
n
d
o
n
esia
e
-
co
mme
r
ce
p
la
tfo
r
m
a
g
a
in
s
t
th
e
r
is
k
…
(
Ged
e
A
r
n
a
Ju
d
e
S
a
s
ka
r
a
)
535
T
h
e
ac
tio
n
s
tag
e
is
th
e
im
p
le
m
en
tatio
n
s
tag
e
o
f
t
h
e
p
r
e
v
io
u
s
ly
d
ev
elo
p
e
d
p
lan
.
At
th
is
s
tag
e,
th
e
p
lan
n
ed
a
ctio
n
s
will
b
e
ca
r
r
ied
o
u
t
s
y
s
tem
atica
lly
to
test
th
e
s
ec
u
r
ity
o
f
th
e
e
-
c
o
m
m
er
ce
p
latf
o
r
m
f
r
o
m
th
e
r
is
k
o
f
ab
u
s
e
b
y
c
y
b
er
cr
im
e
a
cto
r
s
.
I
n
th
is
s
tag
e,
test
in
g
will
b
e
co
n
d
u
cted
b
y
th
e
p
r
ev
i
o
u
s
ly
d
eter
m
in
ed
to
o
ls
an
d
ty
p
es
o
f
attac
k
s
t
o
u
n
d
er
s
tan
d
th
e
e
x
ten
t
to
wh
ich
c
y
b
e
r
cr
im
e
ac
to
r
s
ca
n
ex
p
lo
it
th
es
e
v
u
ln
er
a
b
ilit
ies
f
o
r
phi
s
h
in
g
attac
k
s
an
d
s
teal
u
s
er
s
´
p
er
s
o
n
al
in
f
o
r
m
atio
n
,
s
u
c
h
as
u
s
er
n
am
es
an
d
p
ass
wo
r
d
s
,
d
u
r
in
g
th
e
lo
g
i
n
p
r
o
ce
s
s
.
T
h
e
ev
alu
atio
n
s
tag
e,
th
is
s
tag
e
in
v
o
lv
es
a
th
o
r
o
u
g
h
ass
ess
m
en
t
o
f
th
e
test
s
co
n
d
u
cted
to
d
eter
m
in
e
th
e
s
ec
u
r
ity
o
f
th
e
e
-
co
m
m
er
ce
p
latf
o
r
m
.
E
ac
h
p
latf
o
r
m
t
h
at
h
as
b
ee
n
test
ed
will
b
e
e
v
alu
ated
b
ased
o
n
s
ev
er
al
k
ey
in
d
icato
r
s
,
s
u
ch
a
s
wh
eth
er
th
e
p
latf
o
r
m
ca
n
b
e
r
ep
licated
;
u
n
en
cr
y
p
ted
u
s
er
n
am
e
an
d
p
ass
wo
r
d
,
an
d
s
ev
er
al
o
th
er
in
d
icato
r
s
,
wh
ich
s
er
v
e
as
a
r
ef
er
en
ce
to
class
if
y
th
e
p
latf
o
r
m
in
to
h
i
g
h
o
r
lo
w
s
ec
u
r
ity
lev
els.
T
h
ese
in
d
icato
r
s
ar
e
s
y
s
tem
atica
lly
lis
ted
in
T
ab
le
1
.
T
ab
le
1
.
Platfo
r
m
s
ec
u
r
ity
lev
el
class
if
icatio
n
I
n
d
i
c
a
t
o
r
s
S
a
f
e
t
y
l
e
v
e
l
P
l
a
t
f
o
r
m
n
a
m
e
N
o
t
r
e
p
l
i
c
a
b
l
e
;
r
e
p
l
i
c
a
b
l
e
;
e
n
c
r
y
p
t
e
d
p
a
ssw
o
r
d
H
i
g
h
/
R
e
p
l
i
c
a
b
l
e
;
u
s
e
r
n
a
me
a
n
d
p
a
ssw
o
r
d
a
r
e
n
o
t
e
n
c
r
y
p
t
e
d
.
Lo
w
/
T
o
m
ea
s
u
r
e
ef
f
ec
tiv
e
n
ess
,
we
u
s
e
th
e
th
eo
r
y
p
r
esen
ted
b
y
[
3
5
]
.
Ma
h
m
u
d
i
[
3
5
]
d
escr
ib
es
ef
f
ec
tiv
en
ess
as
th
e
r
elatio
n
s
h
ip
b
etwe
en
o
u
tp
u
t
a
n
d
in
p
u
t.
T
h
e
g
r
ea
ter
th
e
co
n
tr
ib
u
tio
n
o
f
o
u
tp
u
ts
to
th
e
ac
h
iev
em
en
t
o
f
g
o
als,
th
e
m
o
r
e
ef
f
ec
tiv
e
th
e
o
r
g
a
n
izatio
n
,
p
r
o
g
r
am
,
o
r
ac
tiv
ity
.
T
o
m
ea
s
u
r
e
th
e
lev
el
o
f
ef
f
ec
tiv
en
ess
,
we
ca
n
u
s
e
th
e
f
o
l
lo
win
g
f
o
r
m
u
la.
=
×
100%
(
1
)
Ou
tp
u
t:
th
e
n
u
m
b
er
o
f
e
-
co
m
m
er
ce
p
latf
o
r
m
s
th
at
ar
e
s
u
cc
ess
f
u
lly
r
ep
licated
.
I
n
p
u
t:
th
e
n
u
m
b
er
o
f
p
latf
o
r
m
s
test
ed
.
T
h
e
r
esu
lts
will
b
e
class
if
ied
in
to
th
r
ee
(
3
)
ca
teg
o
r
ies:
h
ig
h
(
6
5
-
1
0
0
%),
m
ed
iu
m
(
3
6
-
6
4
%),
an
d
lo
w
(
0
-
3
5
%).
T
h
e
last
s
tag
e
in
t
h
is
m
eth
o
d
is
lear
n
i
n
g
.
T
h
e
lear
n
in
g
s
tag
e
aim
s
to
d
o
cu
m
e
n
t
an
d
s
y
n
th
esize
th
e
r
esu
lts
o
f
th
e
t
esti
n
g
th
at
h
as
b
ee
n
d
o
n
e.
I
n
th
is
s
tag
e,
all
f
in
d
in
g
s
o
b
tain
e
d
f
r
o
m
th
e
s
ec
u
r
ity
test
in
g
o
f
th
e
e
-
co
m
m
er
ce
p
la
tf
o
r
m
will
b
e
d
o
cu
m
e
n
ted
.
T
h
ese
f
in
d
in
g
s
in
clu
d
e
s
u
cc
ess
f
u
l
an
d
u
n
s
u
cc
ess
f
u
l
attac
k
s
im
u
latio
n
s
p
er
f
o
r
m
ed
d
u
r
in
g
th
e
test
in
g
p
r
o
ce
s
s
.
I
n
ad
d
itio
n
,
th
is
s
tag
e
also
f
o
r
m
u
lates
ac
tio
n
ab
le
s
o
lu
tio
n
s
to
im
p
r
o
v
e
th
e
s
ec
u
r
ity
o
f
p
latf
o
r
m
s
th
at
h
a
v
e
lo
w
s
ec
u
r
ity
a
n
d
p
r
o
v
id
es
r
e
co
m
m
en
d
atio
n
s
f
o
r
f
u
tu
r
e
r
esear
c
h
.
3.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
T
h
e
r
esu
lts
o
f
th
is
s
tu
d
y
ca
n
s
er
v
e
as a
r
ef
er
en
ce
f
o
r
p
ar
ties
aim
in
g
to
cr
ea
te
a
p
latf
o
r
m
th
at
is
s
ec
u
r
e
f
r
o
m
cy
b
e
r
cr
im
e
ac
to
r
s
'
ab
u
s
e
f
o
r
co
n
d
u
ctin
g
p
h
is
h
in
g
attac
k
s
.
Mo
r
eo
v
er
,
it
ca
n
o
f
f
e
r
g
u
id
an
ce
to
u
s
er
s
in
ch
o
o
s
in
g
s
ec
u
r
e
e
-
c
o
m
m
er
ce
p
latf
o
r
m
s
an
d
r
e
d
u
c
in
g
th
e
r
is
k
o
f
p
h
is
h
in
g
attac
k
s
.
Sp
e
cif
ically
,
th
e
s
tu
d
y
r
esu
lts
ca
n
ass
i
s
t
e
-
co
m
m
er
ce
o
wn
er
s
in
p
in
p
o
in
tin
g
is
s
u
es
o
n
th
eir
p
latf
o
r
m
s
,
en
a
b
lin
g
th
em
to
p
r
o
m
p
tly
im
p
lem
en
t c
o
r
r
ec
tiv
e
m
ea
s
u
r
e
s
to
u
p
h
o
l
d
th
e
p
latf
o
r
m
'
s
r
ep
u
tatio
n
.
3
.
1
.
Dia
g
no
s
is
re
s
ults
A
t
th
e
d
iag
n
o
s
is
s
tag
e,
th
e
m
a
in
p
r
o
b
lem
id
en
tifie
d
was
th
e
in
cr
ea
s
in
g
n
u
m
b
e
r
o
f
p
h
is
h
in
g
ca
s
es
in
I
n
d
o
n
esia,
esp
ec
ially
in
th
e
e
-
co
m
m
er
ce
s
ec
to
r
.
T
h
e
APW
G
r
ep
o
r
t
(
2
0
2
4
)
r
ec
o
r
d
ed
8
7
7
,
5
3
6
p
h
is
h
in
g
attac
k
s
tar
g
etin
g
v
ar
i
o
u
s
s
ec
to
r
s
s
u
ch
as
e
-
co
m
m
er
ce
,
s
o
cial
m
ed
ia
,
an
d
o
th
e
r
s
.
Su
r
f
s
h
ar
k
also
r
an
k
ed
I
n
d
o
n
esia
as
th
e
8
th
co
u
n
tr
y
with
th
e
h
ig
h
e
s
t
d
ata
leak
ag
e
in
th
e
wo
r
ld
.
I
n
ad
d
itio
n
,
Kasp
er
s
k
y
r
ep
o
r
te
d
a
4
0
%
in
cr
ea
s
e
in
p
h
is
h
in
g
ca
s
es
in
ea
r
l
y
2
0
2
4
co
m
p
ar
ed
to
th
e
f
ir
s
t
q
u
a
r
ter
o
f
2
0
2
3
.
T
h
e
t
y
p
es
o
f
p
h
is
h
in
g
ar
e
n
o
w
in
cr
ea
s
in
g
ly
d
iv
er
s
e,
s
u
ch
as
v
o
ice,
em
ail,
web
,
an
d
QR
p
h
is
h
in
g
,
m
o
s
tly
tar
g
etin
g
e
-
co
m
m
er
ce
u
s
er
s
s
u
ch
as
Sh
o
p
ee
,
Z
alo
r
a,
L
az
ad
a,
an
d
o
th
er
s
.
T
h
e
d
ata
s
h
o
ws
th
e
u
r
g
e
n
cy
o
f
ad
d
r
ess
in
g
s
ec
u
r
ity
is
s
u
es
o
n
e
-
co
m
m
er
ce
p
latf
o
r
m
s
.
T
h
e
n
u
m
b
er
o
f
s
am
p
les
in
th
i
s
s
tu
d
y
was
3
1
.
B
y
th
e
th
eo
r
y
p
u
t
f
o
r
war
d
in
1
9
7
8
[
3
6
]
.
R
a
s
co
e
[
3
6
]
h
as
ar
g
u
ed
th
at
th
e
i
d
ea
l
s
am
p
le
s
ize
r
an
g
es
f
r
o
m
3
0
-
5
0
0
to
o
b
tain
a
d
is
tr
ib
u
tio
n
o
f
v
alu
es
clo
s
er
to
th
e
n
o
r
m
al
c
u
r
v
e.
T
h
e
p
latf
o
r
m
s
am
p
les
in
clu
d
e
T
o
k
o
p
ed
ia,
Sh
o
p
ee
,
L
az
ad
a,
B
u
k
alap
ak
,
B
lib
li,
Or
am
i,
R
alali,
Z
alo
r
a,
Klik
I
n
d
o
m
a
r
et,
So
ci
o
lla,
Ma
tah
ar
i,
Hij
u
p
,
B
r
o
.
d
o
,
B
er
r
y
b
en
k
a,
B
o
b
o
b
o
b
o
,
T
ee
s
,
Fav
o
,
Q
o
o
1
0
,
J
ak
ar
taNo
teb
o
o
k
,
My
Har
to
n
o
,
Sem
u
asale,
Sep
h
o
r
a,
Mo
t
h
er
ca
r
e,
Otten
C
o
f
f
ee
,
Alf
ag
if
t
,
OL
X,
B
h
in
n
ek
a
,
Ma
p
clu
b
,
J
am
tan
g
an
,
Plazak
a
m
er
a,
an
d
E
-
ca
talo
g
u
e.
T
h
e
s
elec
tio
n
o
f
th
e
p
latf
o
r
m
s
am
p
le
is
also
b
ased
o
n
t
h
e
h
ig
h
est
n
u
m
b
er
o
f
u
s
er
s
a
n
d
v
is
ito
r
s
b
ased
o
n
d
ata
f
r
o
m
iPrice
g
r
o
u
p
,
S
im
ilar
web
,
a
n
d
S
tatis
ta
(
p
r
o
ce
s
s
ed
b
y
th
e
I
n
d
o
n
esian
d
ata
ce
n
t
er
an
d
in
f
o
r
m
atio
n
s
y
s
tem
,
an
d
t
h
e
I
n
d
o
n
esian
Min
is
tr
y
o
f
T
r
a
d
e
).
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
8
1
4
I
n
t J Ad
v
Ap
p
l Sci
,
Vo
l.
14
,
No
.
2
,
J
u
n
e
2
0
2
5
:
5
3
3
-
541
536
3
.
2
.
P
l
a
nn
ing
re
s
ults
T
h
e
r
esu
lts
o
f
th
is
s
tag
e
in
clu
d
e:
i)
T
h
e
s
elec
tio
n
o
f
th
e
SET
ap
p
licatio
n
f
o
r
test
in
g
th
e
s
ec
u
r
ity
o
f
e
-
co
m
m
er
ce
p
latf
o
r
m
s
ag
ain
s
t
th
e
r
is
k
o
f
p
h
is
h
in
g
attac
k
s
;
ii)
T
h
e
ty
p
e
o
f
attac
k
u
s
ed
is
C
r
ed
en
tial
Har
v
esti
n
g
b
y
u
tili
zin
g
a
co
m
b
in
atio
n
o
f
s
o
cial
en
g
in
ee
r
in
g
attac
k
s
,
w
eb
s
ite
attac
k
v
ec
to
r
s
,
cr
ed
en
ti
al
h
ar
v
ester
attac
k
m
eth
o
d
s
,
an
d
s
ite
clo
n
er
f
ea
t
u
r
es
.
As
well
as
th
e
ad
d
itio
n
o
f
s
ev
er
al
s
y
n
tax
/p
a
r
am
ete
r
s
to
b
y
p
ass
wh
en
test
in
g
;
an
d
iii)
T
h
e
n
u
m
b
er
o
f
iter
atio
n
s
in
th
is
s
tu
d
y
was
s
et
at
two
tim
es.
T
esti
n
g
th
e
s
ec
u
r
ity
o
f
e
-
co
m
m
er
ce
p
latf
o
r
m
s
b
y
s
im
u
latin
g
p
h
is
h
in
g
attac
k
s
b
y
cr
ea
tin
g
p
h
is
h
in
g
s
ites
u
s
in
g
th
e
S
E
T
ap
p
licatio
n
ca
n
o
n
ly
b
e
d
o
n
e
b
y
f
o
llo
win
g
t
h
e
co
m
b
in
atio
n
o
f
th
ese
f
ea
t
u
r
es.
Oth
er
f
ea
tu
r
es
in
th
e
S
E
T
ap
p
licatio
n
ar
e
d
esig
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ed
f
o
r
d
if
f
er
e
n
t
ty
p
es
o
f
attac
k
s
,
n
o
t
s
p
ec
if
ically
f
o
r
p
h
is
h
in
g
s
ite
cr
ea
tio
n
.
I
f
t
h
e
attac
k
s
im
u
latio
n
ca
n
n
o
t
b
e
p
er
f
o
r
m
ed
u
s
in
g
th
ese
f
ea
tu
r
es,
s
o
m
e
ad
d
itio
n
al
s
y
n
tax
/p
ar
am
eter
s
will
b
e
ad
d
ed
to
p
er
f
o
r
m
t
h
e
b
y
p
ass
.
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f
th
e
ad
d
itio
n
al
s
y
n
t
ax
/p
ar
am
eter
s
s
till
f
ail
to
cr
e
ate
a
p
h
is
h
in
g
s
ite,
t
h
e
iter
ati
o
n
p
r
o
ce
s
s
will
b
e
s
to
p
p
ed
.
3
.
3
.
Act
i
o
n r
esu
lt
s
At
th
is
s
tag
e,
th
e
im
p
lem
en
tatio
n
o
f
th
e
p
r
e
v
io
u
s
ly
p
lan
n
ed
ac
tio
n
s
is
ca
r
r
ied
o
u
t.
T
h
e
test
in
g
p
h
ase
o
f
th
is
s
tu
d
y
was
co
n
d
u
cted
f
r
o
m
Sep
tem
b
e
r
to
No
v
em
b
er
2
0
2
4
.
T
h
e
r
esu
lts
o
f
t
h
e
ac
tio
n
s
tag
e
ca
n
b
e
s
ee
n
as f
o
llo
ws.
3
.
3
.
1
.
P
la
t
f
o
rm
s
a
m
ple t
esting
Fig
u
r
e
1
s
h
o
ws
th
e
r
esu
lts
o
f
a
s
u
cc
ess
f
u
l
r
ep
licatio
n
o
n
o
n
e
o
f
th
e
s
am
p
le
e
-
co
m
m
er
c
e
p
latf
o
r
m
s
.
Fig
u
r
e
1
(
a)
s
h
o
ws th
e
r
ep
licat
ed
lo
g
in
p
ag
e
,
wh
ich
is
ex
ac
tly
th
e
s
am
e
as th
e
o
r
ig
in
al
lo
g
in
p
ag
e
o
f
th
e
Z
al
o
r
a
p
latf
o
r
m
.
Me
an
wh
ile,
Fig
u
r
e
1
(
b
)
s
h
o
ws
th
at
t
h
e
cr
e
d
en
tia
ls
en
ter
ed
b
y
t
h
e
u
s
er
(
u
s
er
n
a
m
e
an
d
p
ass
wo
r
d
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ca
n
b
e
au
to
m
atica
lly
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tu
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ed
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th
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f
en
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ter
m
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al
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n
d
ar
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o
t
en
cr
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ted
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T
h
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f
in
d
in
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icate
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th
at
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p
r
o
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o
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lo
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p
ag
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Z
alo
r
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p
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o
r
m
u
s
in
g
p
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is
h
in
g
tec
h
n
iq
u
es
is
s
u
cc
ess
f
u
l
an
d
h
as
th
e
p
o
ten
tial to
b
e
u
tili
ze
d
b
y
cy
b
er
cr
im
in
als to
c
o
n
d
u
ct
p
h
i
s
h
in
g
attac
k
s
o
n
u
s
er
s
.
I
n
ad
d
itio
n
t
o
test
in
g
t
h
e
Z
alo
r
a
p
latf
o
r
m
,
s
im
ilar
test
s
wer
e
also
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n
d
u
cted
o
n
3
0
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th
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m
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latf
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r
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s
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eter
m
in
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r
l
ev
el
o
f
r
esil
ien
ce
to
th
e
r
is
k
o
f
p
h
is
h
in
g
attac
k
s
.
T
h
e
r
esu
lts
s
h
o
wed
th
at
s
o
m
e
p
latf
o
r
m
s
ex
h
i
b
ited
v
u
ln
er
ab
il
ities
th
at
co
u
ld
b
e
ex
p
l
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ited
b
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cy
b
er
c
r
im
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als
to
co
n
d
u
ct
p
h
is
h
in
g
attac
k
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an
d
u
n
au
th
o
r
ized
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e
f
t
o
f
u
s
er
d
ata
.
On
th
e
o
th
er
h
an
d
,
s
o
m
e
p
lat
f
o
r
m
s
s
h
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ig
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ity
b
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n
n
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t
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e
r
ep
licated
,
o
r
th
e
p
ass
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r
d
s
o
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tain
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e
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cr
y
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ted
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ac
co
r
d
in
g
to
th
e
s
ec
u
r
ity
in
d
icato
r
s
lis
ted
in
T
ab
le
1
.
(
a)
(
b
)
Fig
u
r
e
1
.
Sam
p
le
r
esu
lts
o
f
e
-
c
o
m
m
er
ce
p
latf
o
r
m
s
o
f
(
a)
p
latf
o
r
m
r
e
p
licatio
n
r
esu
lts
an
d
(
b
)
s
u
cc
ess
f
u
lly
ca
p
tu
r
ed
c
r
ed
en
tials
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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t J Ad
v
Ap
p
l Sci
I
SS
N:
2252
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8
8
1
4
S
ec
u
r
ity
a
n
a
lysi
s
o
f I
n
d
o
n
esia
e
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co
mme
r
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p
la
tfo
r
m
a
g
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in
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t
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r
is
k
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(
Ged
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A
r
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a
Ju
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r
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)
537
3
.
4
.
E
v
a
lua
t
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s
ults
B
ased
o
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test
r
esu
lt
s
in
th
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ac
tio
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tag
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we
f
o
u
n
d
th
at
2
2
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t
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3
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p
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r
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elatin
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o
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ly
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tatic
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le
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esig
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s
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d
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s
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ec
ial
UR
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t
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lo
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.
T
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p
r
o
p
o
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ed
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ap
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licatio
n
test
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g
m
et
h
o
d
in
t
h
is
s
tu
d
y
ten
d
ed
to
h
av
e
an
in
o
r
d
in
ately
h
ig
h
er
s
u
cc
ess
r
ate
(
7
0
.
9
%)
wh
en
att
ac
k
in
g
p
latf
o
r
m
s
with
o
u
t
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y
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ic
au
th
en
ticatio
n
m
ec
h
an
is
m
s
.
T
h
is
s
tag
e
will
class
if
y
e
-
co
m
m
er
ce
p
latf
o
r
m
s
b
ased
o
n
th
eir
s
ec
u
r
ity
lev
e
l,
p
latf
o
r
m
s
with
h
ig
h
-
s
ec
u
r
ity
an
d
l
ow
-
s
ec
u
r
ity
lev
els.
Platfo
r
m
s
with
h
ig
h
s
ec
u
r
ity
ar
e
r
esis
tan
t
to
p
h
is
h
in
g
attac
k
s
,
wh
ile
p
latf
o
r
m
s
with
lo
w
s
ec
u
r
ity
ar
e
v
u
ln
er
ab
le
t
o
s
u
ch
attac
k
s
.
T
h
e
r
esu
lts
o
f
th
e
class
if
icatio
n
ca
n
b
e
s
ee
n
in
T
ab
le
2
.
T
ab
le
2
.
R
esu
lt o
f
class
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y
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g
t
h
e
s
ec
u
r
ity
le
v
el
o
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p
latf
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r
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P
l
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t
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ssessme
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h
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o
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r
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p
l
i
c
a
b
l
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T
h
e
r
esu
lts
o
f
m
ea
s
u
r
in
g
th
e
e
f
f
ec
tiv
en
ess
o
f
th
e
SET
a
p
p
lic
atio
n
in
co
n
d
u
ctin
g
test
s
ar
e
as f
o
llo
ws:
I
n
ac
co
r
d
a
n
ce
with
th
e
th
eo
r
y
o
f
ef
f
ec
tiv
en
ess
co
n
v
e
y
ed
b
y
Ma
h
m
u
d
i
[
3
5
]
,
th
e
p
er
ce
n
tag
e
o
f
th
e
s
u
cc
ess
r
ate
o
f
th
e
SET
ap
p
licatio
n
in
test
i
n
g
e
-
co
m
m
e
r
ce
p
latf
o
r
m
s
ca
n
b
e
m
ea
s
u
r
ed
u
s
in
g
th
e
(
2
)
.
T
h
i
s
f
o
r
m
u
la
p
r
o
v
i
d
es
a
q
u
an
titativ
e
m
ea
s
u
r
e
o
f
h
o
w
s
u
cc
ess
f
u
l th
e
SET
ap
p
licatio
n
is
in
s
im
u
latin
g
p
h
is
h
in
g
attac
k
s
.
=
(
−
ℎ
ℎ
−
ℎ
)
×
100%
(
2
)
So
,
=
(
22
31
)
×
100%
=
70
.
9%
B
ased
o
n
th
ese
r
esu
lts
,
th
e
ef
f
ec
tiv
en
ess
o
f
th
e
SET
a
p
p
lica
tio
n
in
co
n
d
u
ctin
g
test
in
g
was
r
ec
o
r
d
e
d
at
7
0
.
9
%.
B
ased
o
n
th
e
m
e
asu
r
em
en
t
ca
teg
o
r
ies
d
escr
ib
ed
b
y
[
3
5
]
in
th
e
th
e
o
r
y
o
f
ef
f
ec
tiv
en
ess
,
th
is
p
er
ce
n
tag
e
is
in
clu
d
ed
in
t
h
e
h
ig
h
ca
teg
o
r
y
.
T
h
is
i
n
d
icate
s
th
at
th
e
SET
a
p
p
licatio
n
is
h
ig
h
ly
ef
f
ec
tiv
e
in
s
im
u
latin
g
p
h
is
h
in
g
attac
k
s
o
n
e
-
co
m
m
er
ce
p
latf
o
r
m
s
.
T
h
is
s
tu
d
y
in
v
esti
g
ated
a
c
o
m
p
r
eh
e
n
s
iv
e
o
f
3
1
e
-
c
o
m
m
er
ce
p
latf
o
r
m
s
in
I
n
d
o
n
esia
an
d
th
eir
v
u
ln
er
ab
ilit
y
a
g
ain
s
t
th
e
r
is
k
o
f
p
h
is
h
in
g
attac
k
s
u
s
in
g
th
e
S
E
T
ap
p
licatio
n
.
H
o
wev
er
,
a
d
d
itio
n
al
an
d
in
-
d
ep
th
r
esear
ch
m
ay
b
e
r
eq
u
ir
e
d
to
co
n
f
ir
m
th
is
f
in
d
in
g
.
Par
ticu
la
r
ly
r
e
g
ar
d
in
g
p
latf
o
r
m
s
e
m
p
lo
y
in
g
em
er
g
in
g
au
th
en
ticatio
n
tech
n
o
lo
g
ies lik
e
b
io
m
etr
ics an
d
o
th
er
s
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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N
:
2
2
5
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-
8
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1
4
I
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t J Ad
v
Ap
p
l Sci
,
Vo
l.
14
,
No
.
2
,
J
u
n
e
2
0
2
5
:
5
3
3
-
541
538
3
.
5
.
L
ea
rning
re
s
ults
B
ased
o
n
th
e
r
esu
lts
o
f
s
ev
er
al
s
tag
es
th
at
h
av
e
b
ee
n
ca
r
r
ied
o
u
t,
2
2
o
f
3
1
s
am
p
les
o
f
e
-
co
m
m
er
ce
p
latf
o
r
m
s
s
elec
ted
to
b
e
test
ed
f
o
r
s
ec
u
r
ity
wer
e
f
o
u
n
d
to
b
e
in
s
ec
u
r
e.
Me
an
wh
ile,
9
o
th
er
e
-
co
m
m
er
ce
p
latf
o
r
m
s
h
a
v
e
b
ee
n
p
r
o
v
en
s
af
e
an
d
f
r
ee
f
r
o
m
th
e
r
is
k
o
f
m
is
u
s
e
b
y
c
y
b
er
cr
im
e
ac
to
r
s
to
co
n
d
u
ct
p
h
is
h
in
g
attac
k
s
.
T
h
is
s
h
o
ws
th
at
a
s
ig
n
if
ican
t
p
o
r
tio
n
o
f
e
-
co
m
m
er
c
e
p
latf
o
r
m
s
s
till
lack
ad
eq
u
ate
s
ec
u
r
ity
m
ea
s
u
r
es
to
p
r
o
tect
ag
ai
n
s
t p
h
is
h
in
g
atta
ck
s
.
T
h
e
r
ec
o
m
m
en
d
atio
n
s
th
at
ca
n
b
e
g
i
v
en
b
ased
o
n
t
h
e
test
r
esu
lts
th
at
h
av
e
b
ee
n
ca
r
r
ie
d
o
u
t
ar
e:
i)
ap
p
l
y
s
tep
-
wis
e
au
th
e
n
ticatio
n
o
n
th
e
lo
g
i
n
p
ag
e
s
o
th
at
ap
p
licatio
n
s
s
u
c
h
as
SET
an
d
s
o
o
n
ca
n
n
o
t
r
ep
licate,
ii)
im
p
lem
en
t
em
b
e
d
d
ed
lo
g
in
.
I
n
teg
r
atin
g
th
e
lo
g
in
p
ag
e
in
to
th
e
h
o
m
ep
ag
e
to
p
r
ev
en
t
UR
L
-
b
ased
p
h
is
h
in
g
attem
p
ts
,
an
d
iii)
i
m
p
lem
en
tin
g
m
u
lti
-
f
ac
to
r
au
t
h
en
ticatio
n
ca
n
s
tr
en
g
th
en
u
s
er
au
th
en
ticatio
n
to
m
in
im
i
z
e
u
n
au
t
h
o
r
i
z
ed
ac
ce
s
s
.
3
.
6
.
D
is
cus
s
io
n
T
h
is
s
t
u
d
y
i
n
v
esti
g
a
tes
th
e
s
e
c
u
r
it
y
o
f
3
1
e
-
c
o
m
m
e
r
c
e
p
la
tf
o
r
m
s
i
n
I
n
d
o
n
esi
a,
ca
t
e
g
o
r
i
zi
n
g
th
em
i
n
t
o
two
g
r
o
u
p
s
b
as
e
d
o
n
th
ei
r
v
u
ln
e
r
ab
ilit
y
t
o
p
h
is
h
in
g
at
tac
k
s
:
i
)
h
i
g
h
-
s
ec
u
r
it
y
p
l
atf
o
r
m
s
a
n
d
ii
)
l
o
w
-
s
ec
u
r
it
y
p
la
tf
o
r
m
s
.
N
in
e
p
l
at
f
o
r
m
s
,
in
clu
d
i
n
g
T
o
k
o
p
e
d
i
a,
B
h
i
n
n
e
k
a
,
Se
p
h
o
r
a,
a
n
d
o
t
h
e
r
s
,
we
r
e
class
i
f
i
ed
as
h
i
g
h
-
s
ec
u
r
it
y
p
la
tf
o
r
m
s
d
u
e
to
t
h
e
i
m
p
le
m
e
n
ta
ti
o
n
o
f
a
d
v
a
n
c
e
d
s
e
cu
r
it
y
m
ea
s
u
r
es
li
k
e
s
te
p
-
wis
e
a
u
t
h
e
n
ti
ca
ti
o
n
a
n
d
em
b
e
d
d
e
d
l
o
g
i
n
.
I
n
u
s
er
i
n
t
er
f
a
ce
(
UI
)
d
esi
g
n
t
h
e
o
r
y
,
t
h
is
m
et
h
o
d
is
ca
te
g
o
r
ize
d
as
p
r
o
g
r
ess
i
v
e
d
is
cl
o
s
u
r
e
,
wh
e
r
e
i
n
f
o
r
m
at
io
n
is
p
r
es
e
n
te
d
g
r
a
d
u
a
ll
y
t
o
r
e
d
u
ce
c
o
g
n
iti
v
e
lo
a
d
a
n
d
en
h
an
ce
u
s
e
r
i
n
f
o
r
m
a
tio
n
s
e
c
u
r
it
y
[
3
7
]
.
Step
-
wis
e
au
th
en
ticatio
n
b
r
ea
k
s
d
o
wn
th
e
l
o
g
in
p
r
o
ce
s
s
in
to
m
u
ltip
le
s
tep
s
,
ty
p
ically
r
eq
u
ir
in
g
t
h
e
u
s
er
to
in
p
u
t
a
u
s
er
n
am
e
b
ef
o
r
e
en
ter
in
g
a
p
ass
wo
r
d
.
T
h
i
s
ap
p
r
o
ac
h
u
tili
ze
s
asy
n
ch
r
o
n
o
u
s
J
av
aScr
ip
t
an
d
XM
L
(
AJAX
)
tech
n
iq
u
es
to
in
ter
ac
t
with
th
e
s
er
v
er
d
y
n
a
m
ically
an
d
o
f
f
er
r
ea
l
-
tim
e
f
ee
d
b
ac
k
to
th
e
u
s
er
with
o
u
t
p
ag
e
r
elo
ad
in
g
.
Platf
o
r
m
s
lik
e
T
o
k
o
p
ed
ia,
B
h
in
n
e
k
a,
an
d
o
th
er
s
e
m
p
lo
y
th
is
m
eth
o
d
to
en
h
a
n
ce
s
ec
u
r
ity
,
as
it
ca
n
h
in
d
e
r
cy
b
e
r
cr
im
in
als
f
r
o
m
d
u
p
licatin
g
th
e
lo
g
in
p
a
g
e.
Utilizin
g
AJAX
tech
n
iq
u
es
en
s
u
r
es
th
at
s
en
s
itiv
e
in
f
o
r
m
atio
n
,
s
u
ch
as
p
ass
wo
r
d
s
is
en
cr
y
p
ted
b
ef
o
r
e
tr
an
s
m
is
s
io
n
to
th
e
s
er
v
er
,
th
er
eb
y
d
ec
r
ea
s
in
g
th
e
r
is
k
o
f
m
is
u
s
e
b
y
cy
b
er
cr
im
in
als to
co
n
d
u
ct
p
h
is
h
in
g
attac
k
s
.
E
m
b
ed
d
e
d
lo
g
in
u
tili
ze
d
b
y
p
latf
o
r
m
s
lik
e
Sep
h
o
r
a,
OL
X
,
an
d
o
th
er
s
,
in
teg
r
ates
th
e
lo
g
in
p
ag
e
d
ir
ec
tly
in
to
th
e
m
ain
p
a
g
e
wi
th
o
u
t
r
ed
ir
ec
tin
g
u
s
er
s
t
o
a
s
ep
ar
ate
UR
L
.
T
h
is
ap
p
r
o
ac
h
d
ep
en
d
s
o
n
d
y
n
am
ic
elem
en
ts
p
o
wer
ed
b
y
J
av
aScr
i
p
t,
m
ak
in
g
it c
h
allen
g
in
g
f
o
r
c
y
b
er
cr
im
in
als to
r
ep
licate
th
e
l
o
g
in
p
r
o
ce
s
s
u
s
in
g
p
h
is
h
in
g
a
p
p
licatio
n
s
lik
e
S
E
T
an
d
o
th
er
s
.
B
y
r
em
o
v
in
g
th
e
n
ec
ess
ity
f
o
r
a
d
ed
ica
ted
lo
g
in
UR
L
,
an
em
b
ed
d
e
d
lo
g
in
ca
n
d
ec
r
ea
s
e
p
o
ten
tial
atta
ck
s
an
d
en
h
a
n
ce
s
ec
u
r
ity
.
T
h
ese
m
eth
o
d
s
ef
f
ec
tiv
ely
th
war
t
p
h
is
h
in
g
attac
k
s
b
y
en
cr
y
p
tin
g
u
s
er
p
ass
wo
r
d
s
an
d
in
te
g
r
atin
g
th
e
lo
g
i
n
p
r
o
ce
s
s
in
to
th
e
m
a
in
p
ag
e
.
C
o
n
v
er
s
ely
,
2
2
p
latf
o
r
m
s
lik
e
Z
alo
r
a,
Sh
o
p
ee
,
L
az
ad
a,
a
n
d
o
th
er
s
wer
e
id
en
tifie
d
as
v
u
l
n
er
ab
le
t
o
p
h
is
h
in
g
attac
k
s
d
u
e
to
th
eir
d
ep
en
d
en
ce
o
n
s
in
g
le
-
p
a
g
e
lo
g
in
an
d
cu
s
to
m
lo
g
i
n
UR
L
s
,
w
h
ich
ar
e
s
im
p
ler
to
r
ep
licate.
T
h
e
Sin
g
le
Pag
e
l
o
g
in
m
et
h
o
d
m
er
g
es
th
e
u
s
e
r
n
am
e
an
d
p
ass
wo
r
d
f
o
r
m
s
o
n
a
s
in
g
le
p
ag
e
,
f
ac
ilit
atin
g
attac
k
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u
p
licate
th
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lo
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in
p
ag
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to
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atu
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co
n
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ast,
th
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lo
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-
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ly
UR
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licatio
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icially
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lth
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u
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f
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ad
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g
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y
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h
en
u
s
er
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en
t
er
cr
ed
e
n
tials
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th
eir
s
tatic
n
atu
r
e
m
ak
es
th
em
h
ig
h
ly
v
u
ln
e
r
ab
le
to
p
h
is
h
in
g
att
ac
k
s
.
C
y
b
er
cr
im
in
als
ca
n
ea
s
ily
cr
ea
te
f
ak
e
lo
g
i
n
p
ag
es th
at
m
im
ic
th
e
a
p
p
ea
r
an
ce
o
f
leg
itima
te
p
latf
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r
m
s
an
d
d
ec
eiv
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u
s
er
s
in
to
en
te
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in
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th
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ir
cr
ed
en
tials
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I
n
p
r
ev
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ies,
m
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o
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l
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s
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ln
er
ab
ilit
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o
n
s
o
cial
m
e
d
ia
p
latf
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m
s
[
3
8
]
–
[
4
0
]
.
T
h
ese
s
tu
d
ies
o
n
l
y
g
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as
f
ar
as
test
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wh
eth
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th
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ca
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e
r
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licated
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f
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th
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p
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if
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u
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ec
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an
is
m
s
th
at
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ak
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ep
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im
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ib
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r
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le,
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ies
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ev
ea
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tain
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latf
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ar
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s
ec
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ag
ain
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th
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y
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o
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t
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al
y
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th
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u
n
d
er
ly
i
n
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au
th
en
ticatio
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m
eth
o
d
s
(
s
u
ch
as
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tep
-
wis
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au
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h
en
ticatio
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o
r
em
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ed
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ed
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in
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at
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lay
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n
im
p
o
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tan
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r
o
le
in
th
e
s
ec
u
r
ity
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f
t
h
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latf
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r
m
s
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r
f
i
n
d
in
g
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i
n
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icate
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at
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ig
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en
tatio
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f
s
tep
-
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au
th
en
ticatio
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an
d
em
b
ed
d
e
d
lo
g
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n
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n
o
t
a
s
s
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ciate
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with
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o
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s
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x
p
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ien
ce
in
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co
m
m
e
r
ce
p
latf
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r
m
s
.
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h
e
p
r
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p
o
s
ed
m
eth
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d
m
ay
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en
ef
it
f
r
o
m
co
m
b
in
in
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tech
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u
ln
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en
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eh
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io
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ies
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t
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ativ
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f
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g
p
latf
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m
u
s
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h
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co
n
tr
asts
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s
in
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n
an
d
s
p
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UR
L
s
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o
r
lo
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,
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esp
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v
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b
u
t it
is
h
ig
h
ly
v
u
ln
er
ab
l
e
to
r
ep
licatio
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.
T
h
e
f
in
d
in
g
s
o
f
th
is
s
tu
d
y
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p
h
asize
th
e
s
ig
n
if
ican
ce
o
f
im
p
lem
en
tin
g
r
o
b
u
s
t secu
r
ity
m
ea
s
u
r
es,
lik
e
s
tep
-
wis
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au
th
en
ticatio
n
a
n
d
em
b
ed
d
e
d
lo
g
in
t
o
s
af
eg
u
ar
d
e
-
co
m
m
er
ce
p
latf
o
r
m
s
f
r
o
m
p
o
ten
tial
m
is
u
s
e
b
y
cy
b
er
cr
im
in
als f
o
r
co
n
d
u
ctin
g
p
h
is
h
in
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attac
k
s
.
Platfo
r
m
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wn
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an
d
d
ev
elo
p
er
s
ar
e
ex
p
ec
ted
to
p
r
io
r
itize
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e
im
p
lem
en
tatio
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o
f
th
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m
eth
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to
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tect
p
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m
ain
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u
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Ou
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b
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lo
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m
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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8
8
1
4
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.
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m
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ter
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c
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b
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tac
ted
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m
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:
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ry
a
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k
sh
a
.
a
c
.
id
.
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