Autonomous Vehicle Engineering - July 2022 - 18

Cybersecurity
FUTURE
We see your
mechanisms to attack the network or send different packets
to the network that appear legitimate but are actually from
a malicious source.
Network Bombardment - The network simulator
differently.
establishes a scenario in which signals from numerous
UEs bombard the network. The goal is to overload the
servers, so the network can't provide the required service.
The solution replicates end-of-service to reveal how
devices/network elements handle a scenario if a similar
nefarious act occurs.
Practical Security Testing - As mentioned, UE
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testing remains critical. As such, another test is conducted
in which a signaling tester or wireless communications
test set serves as a base station. Software connects with
the UE and a testing server. Functional security measurements
are conducted to verify the UE performs according
to specification.
Penetration Testing - This is an aggressive, all-up
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exercise of system-wide security. Penetration tests are typically
done by security experts who use their experience to
determine vulnerabilities. This type of testing (Fig. 3) may
go beyond simulation to conducting certain attacks on the
UE or telematic control unit (TCU) while connected to a
live wireless network. In this case, the simulator creates
a Rogue Base Station (RBS) scenario. The RBS masquerades
as a legitimate base station to facilitate a Man-inThe-Middle
(MiTM) attack between handsets, or another
mobile UE, and the mobile network.
Cellular Fuzzing - Another test attempts to uncover
vulnerabilities that might be the basis for future attacks.
This technique is commonly used to explore the dark
corners of a computer program, network, embedded system
or other device's threat space. For UE verification, the
network simulator generates inputs that have been systematically
malformed to be invalid, unexpected or random
commands, replies or data packets. Crashes, incorrect code
assertions or other unexpected, potentially security-critical
behavior is monitored by the network simulator.
Comprehensive approach
The evolution of the automobile has created a new level
of cybersecurity testing. It has gone beyond the vehicle
itself and extends to the entire network. Establishing a
comprehensive testing approach that verifies all levels of
the ecosystem requires solutions that emulate the realworld
environment. Implementing this approach will
bring greater confidence in how vehicles will withstand
cyberattacks. ■
Craig Hendricks is an electrical engineer and senior market development
manager for Anritsu.
Hackensack, NJ 07601, USA ∙ +1.201.343.8983 ∙ main@masterbond.com
www.masterbond.com
18 July 2022
AUTONOMOUS VEHICLE ENGINEERING
http://info.hotims.com/82340-706 http://info.hotims.com/82340-707
Autonomous Vehicle Engineering - July 2022

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