%PDF-1.5
%
1 0 obj
<>
endobj
2 0 obj
<>
endobj
3 0 obj
<>stream
IEEE
IEEE Transactions on Mobile Computing; ;PP;99;10.1109/TMC.2020.2995509
Wi-Fi calling
security and privacy
computer vision recognition
and cellular network
The Untold Secrets of WiFi-Calling Services: Vulnerabilities, Attacks, and Countermeasures
endstream
endobj
4 0 obj
<>stream
x+ |
endstream
endobj
5 0 obj
<>stream
xAO1WQv(Mt$AJµ.xdom|~h~-xے5qG?xVy=F
z8ĥgm)^v>`}f8&ɗ
zMYj\O<|s}S7f)V
ۨ>ڶz5r|qQ,8uq>X
endstream
endobj
6 0 obj
<>stream
x+ |
endstream
endobj
7 0 obj
<>stream
xMo0D+X$:F[?r衕 #quojTsy7苞d܁nG|YǛO
\2H.t'9M
r$TxЫߗ|蕇O5g1]b^p:m[^#WSeѐDZ/wцVs>[
endstream
endobj
8 0 obj
<>stream
x+ |
endstream
endobj
9 0 obj
<>stream
xAO1WQvKTܛ8hkY
<۷z7&%}Ök<tj<*rsݽ$assU|pw⣏X׀MKH»^,%S.a;x6
$mb;BBĝ?}y/jiIoP>U
endstream
endobj
10 0 obj
<>stream
x+ |
endstream
endobj
11 0 obj
<>stream
xMo0D+X$:FP[?r衕(Foj/Tsy7蛞oy=ܒTCŲ77Y7sb.pΡJw|k| )TxkR">`gSkW1.q/'ֶ-c/)TgȚSDZ/wњVs$>Z
endstream
endobj
12 0 obj
<>stream
x+ |
endstream
endobj
13 0 obj
<>stream
xAO1WQvKTܛ8hkYnz7&%}V,dpK;όM$»^,5S/<8Nﭱ>ԍylCm{\+N9JECǾNִ?p>V
endstream
endobj
14 0 obj
<>stream
x+ |
endstream
endobj
15 0 obj
<>stream
xMo0D+X$:F4~(F%vTsy7L/R'[ҁ
t|cL;q.KDkl.Q>`^ WNY[}'kn̼l+)XmYt*1dqĝu>
endstream
endobj
16 0 obj
<>stream
x+ |
endstream
endobj
17 0 obj
<>stream
xAO1WQvKTܛ8hkY
<۷z7&%}ÖkgܒTCYe_nn׳$5sb.pΡJN|k| )Vx؋ߗD|%`X0uc;ƽdm[l^RUȚSDZ/E5->
endstream
endobj
18 0 obj
<>stream
x+ |
endstream
endobj
19 0 obj
<>stream
xMo0D+X$:F4~(F%vTsy7L/2#ܞnIâO77E1/K!d.e-tG9zel\9eџ
o;2|+_`gSkW1.qا8`ٶ-cW'gMҩĐDZ/wњVr`>Y
endstream
endobj
20 0 obj
<>stream
x+ |
endstream
endobj
21 0 obj
<>stream
xN0Ds rC Rn[%`oq\KWGn'kҁTFy9QC92Vi>b^֑/!e֟
oqknCk$#]a3
B|{e~zN9Zђ t>\
endstream
endobj
22 0 obj
<>stream
x+ |
endstream
endobj
23 0 obj
<>stream
xAO1WQvKTܛ8hkYnz7&%}VdpK;όM$»^,5S/<8Nﭱ>ԍylCm{\+N9JECǾNִ?n>T
endstream
endobj
24 0 obj
<>stream
x+ |
endstream
endobj
25 0 obj
<>stream
xAO1WQvKTܛ8hkY
<۷z7&%}ÖkgܒTCYe_nn׳$5sb.pΡJN|k| )Vx؋ߗD|%`X0uc;ƽdm[l^RUȚSDZ/E5-P>
endstream
endobj
26 0 obj
<>stream
x+ |
endstream
endobj
27 0 obj
<>stream
xMo0D+X$:Fminȁ(F%vTsy7LR'[ҁ8
trcL;q.KDkl(VM+,S=~>]Yƀxlj5
S7桱sl)XmYt*1dqĝu>
endstream
endobj
28 0 obj
<>stream
x+ |
endstream
endobj
29 0 obj
<>stream
xAO1WQv(Mt$AJµ.xdom|~h~-#dpMQ5}n^yQ~y^:1q)Y|JXf 'I»C~S0a>ԍ4v{6ꀏm{\_r.?}yuj-iA>
endstream
endobj
30 0 obj
<>stream
x+ |
endstream
endobj
31 0 obj
<>stream
xAO1WQvKTܛ8hkY
<۷z+7&%}Ö_w #74
tz֓$=zB92Vi݉>b^6/!e
{Oaknccgظ7XmK
Yw38u⾨u%up>]
endstream
endobj
32 0 obj
<>stream
x+ |
endstream
endobj
33 0 obj
<>stream
xN1D)GJ\dѝ7A8h7zhf~O7Fz:Q2c*N%2VVi!aA#։1֟/ w9q33 (m]Xg쳌xi#+K*4יӊ>
endstream
endobj
34 0 obj
<>stream
x+ |
endstream
endobj
35 0 obj
<>stream
xMo0D+X$:Fminȁ(F%vTsy7L2ܞnI㼲77E1/K!d.e-R|Z26AOwe>╇/N5+Lݘαqoا8`Ѷ-cW'gMҩĐDZ/wњVp>W
endstream
endobj
36 0 obj
<>/SaveStreams<>/Metadata 3 0 R/Type/Catalog/Outlines 40 0 R/Pages 41 0 R>>
endobj
40 0 obj
<>
endobj
38 0 obj
<>stream
xS(T e
endstream
endobj
39 0 obj
<>stream
xST %
endstream
endobj
41 0 obj
<>
endobj
42 0 obj
<>
endobj
43 0 obj
<>
endobj
44 0 obj
<>
endobj
37 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Font<>>>/CropBox[0 0 612 792]/Parent 42 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
45 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text/ImageC/ImageI]/XObject<>/Font<>>>/CropBox[0 0 612 792]/Parent 42 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
46 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text/ImageC/ImageI]/XObject<>/Font<>>>/CropBox[0 0 612 792]/Parent 42 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
47 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text/ImageC/ImageI]/XObject<>/Font<>>>/CropBox[0 0 612 792]/Parent 42 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
48 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text/ImageC/ImageI]/XObject<>/Font<>>>/CropBox[0 0 612 792]/Parent 42 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
49 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Font<>>>/CropBox[0 0 612 792]/Parent 42 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
50 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Font<>>>/CropBox[0 0 612 792]/Parent 43 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
51 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Pattern<>/Font<>>>/CropBox[0 0 612 792]/Parent 43 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
52 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text/ImageC]/XObject<>/Font<>>>/CropBox[0 0 612 792]/Parent 43 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
53 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text/ImageC/ImageI]/XObject<>/Font<>>>/CropBox[0 0 612 792]/Parent 43 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
54 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Font<>>>/CropBox[0 0 612 792]/Parent 43 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
55 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Font<>>>/CropBox[0 0 612 792]/Parent 44 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
56 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text/ImageC]/XObject<>/Font<>>>/CropBox[0 0 612 792]/Parent 44 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
57 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Font<>>>/CropBox[0 0 612 792]/Parent 44 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
58 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Font<>>>/CropBox[0 0 612 792]/Parent 44 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
59 0 obj
<>/ExtGState<>/ProcSet[/PDF/Text]/Font<>>>/CropBox[0 0 612 792]/Parent 44 0 R/Rotate 0/TrimBox[0 0 612 792]/MediaBox[0 0 612 792]>>
endobj
60 0 obj
<>stream
HW[sۺ~L:Rǂx>tI'i$=ΜHXBq}wA d'MǞ^n&bߵ^b%N.1lvF/%%x+IR N])rDS/Z^Zk0tR_֟(YsNJ/Tpi3k#\AU%mZR5aX}t2Ԛa4'i4L9zU"/A4&ɎC(0^yF^ՒS^7;ʯ~GrI|Bd^Oos/5|Bă e$4
S^HdI3?}D=7 ?̓tIkՔXJ>bbeRڝlzdz'r.~m2hdS?IRfi¦a#:%7L/m/b`thF,WIGi>I l- n!o:Vv,of>@/"Pvuu_g>jՙ-+af>b=mWdv]fM5+ZsdD3b1X BˤċD `2cĢ6𢵨^E)xj/s&pb_;8`5LԞ͖/},\Zfxj]8;{+,0i: ˮWj0ag>@=!rjyǐ=\