45
Security Issues in Blockchained IoT
TABLE 3.4
Coverage and Analysis in Reviewed Research
Attack
Denial of Service
(DoS) Attack
Distributed DOS
(DDoS) attack
51%
Attack
Double-spending
Mining
Attack
Collision
Attack
Linking
Attack
Modification
Attack
Dropping
Attack
Sybil
Attack
R1
N
Y
Y
Y
N
Y
X
N
N
Y
R2
N
Y
N
N
N
N
Y
N
N
N
R3
X
N
N
N
N
N
N
N
N
N
R4
N
N
N
N
N
N
N
N
N
N
R5
N
N
N
N
N
N
N
N
N
N
R6
N
N
N
N
N
N
N
N
N
N
R7
N
N
N
N
N
N
N
N
N
Y
R8
N
N
N
N
N
N
N
N
N
N
R9
N
N
N
Y
N
N
N
N
N
N
R10
N
N
N
N
N
N
N
N
N
N
R11
Y
N
N
N
N
N
N
N
N
N
R12
N
N
N
N
N
N
N
N
N
N
R13
N
N
N
N
N
N
N
N
N
N
R14
N
N
N
N
N
N
N
N
N
N
R15
N
N
N
N
N
N
N
N
N
N
R16
N
N
N
N
N
N
N
N
N
N
R17
Y
N
Y
N
N
N
N
N
N
Y
R18
N
N
N
N
N
N
N
N
N
N
R19
Y
N
Y
N
Y
N
N
N
Y
N
R20
N
Y
Y
N
N
N
Y
Y
Y
N