IEEE Consumer Electronics Magazine - May/June 2022 - 62

Special Section on Consumer, Commercial, and Industrial IoT Security and Resilience
Figure 4. Global IoT spending forecast by IoT
analytics from 2018.
disruption to our daily lives. However, in turn,
the number of potential cyber threats have
surged at the same time. Sonicwall 2020 Cyber
Threat Report recorded 20.2 million IoT malware
attacks, which is a staggering increase of 50%
compared to the preceding year. They also
reported that for the year 2020, the months of
January, February, and March each accumulated
more attacks than their 2018 and 2019 counterparts
combined.
As noted in IHS IoT Trend Watch,11 IoT provides
an increasing attack surface to daily lives,
from safety to health and well being to financial
dimensions. Honeypot attack traffic statistics12
from F-Secure is shown in Figure 5, with a 357%
spike in 2019!
Microsoft Digital Defense Report from September
2020 concurs with this trend. Figure 6
shows the global IoT malware volume from Sonicwall
2020 Cyber Threat Report from January 2019
to September 2020. The sheer number of the IoT
malware volume, for example, about 7 M for September
2020, clearly shows the huge effort by the
adversaries to target IoT for the potential financial
gains with relatively little effort.
Figure 6. Sonicwall 2020 global iot malware
volume.
UNEQUIVOCAL APPEAL TO
CYBERCRIMINALS: IoT
The main reasons of IoT ecosystem's attractiveness
to the cybercriminals include its sheer
size, minimal or no default protection, the minimal
time, cost, expertise, and effort to initiate
attacks, longer lifetimes making it more susceptible,
and rich lateral movement possibilities. As a
result, IoT continues to be a viable, soft, and
popular target13,14 deserving the label of " low
hanging fruit " for the malicious actors.
In many cases, an IoT device could have life
threatening effects. For example, IoT devices
used in nuclear power plants are vulnerable to
internal physical threats. Attacks could be
directed at public utilities in order to disrupt
services such as water and electricity supply,
leaving potentially thousands of people without
access to important resources.
Lateral movement means that a single compromised
IoT device could result in nearby devices
on the same network being compromised as
well. A recent Google outage left many households
without vital features, such as lighting.
The Aurora Test by Idaho National Lab demonstrated
in 2007 the detrimental physical impact
of a cyberattack. In 2016, thousands of IoT devices
were hijacked and used as pawns of the Mirai
botnet15
to launch one of the largest DDoS
Figure 5. F-Secure honeypot attack traffic, first half
of 2020.
62
attacks. Smart TVs have been hijacked by ransomware
and made inoperable. Ordinary IoT
cameras can be impacted by cryptojacking and
used to mine cryptocurrency for hackers.
Implantable cardiac devices were found to be
hackable, with the deadly potential to be used
IEEE Consumer Electronics Magazine

IEEE Consumer Electronics Magazine - May/June 2022

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