Ask why someone would hack a truck and the answer is: for the same reasons they hack anything, except the prize is bigger. A single compromised passenger car is an incident. A compromised logistics fleet is an extortion case, a stopped port terminal, or a supply chain problem with a country attached to it. As heavy-duty vehicles electrify and connect, cybersecurity has moved from the IT department’s worry to a vehicle engineering discipline.
Snelle antwoorden
- What is automotive cybersecurity? The engineering discipline of protecting vehicles, their networks and their connected services against unauthorised access and manipulation
- Why does it matter for heavy-duty? Electric and connected trucks and machines carry the same interfaces as cars, but the operational and safety stakes of a compromise are far higher
- What does the law require? UN R155 makes a certified Cybersecurity Management System a condition for type approval; ISO 21434 is the engineering standard behind it
- Where do attacks enter? Telematics and remote access, the charging connection, diagnostic ports, in-vehicle networks and the software supply chain
The attack surface of a modern heavy vehicle
Map a modern electric truck or machine and five doors appear. Telematics: the fleet management unit with its own SIM and cloud connection, powerful by design because operators want remote diagnostics and geofencing. The charging port: high-power charging is a data session as much as a power transfer; [ISO 15118 communication] includes contract handling and payment, which makes it interesting to more than vandals. Diagnostics: the OBD or service connector that speaks directly to control units, protected in the workshop by little more than physical access. The in-vehicle network: CAN was designed in an era of trust and will execute any well-formed frame it hears. The supply chain: every third-party control unit and library ships with its own history, documented or not.
None of this is theoretical. Demonstrated attacks on trucks have shown remote engine shutdown and instrument manipulation, and charging infrastructure has produced a steady stream of published vulnerabilities. The honest summary: the entry points are standard, the tooling is public, and the only variable is how well the vehicle was engineered.
What regulators now demand
Since UN R155, cybersecurity is a type approval subject in UNECE markets: no certified Cybersecurity Management System, no approval. Its sibling UN R156 does the same for software updates. The engineering method behind both is [ISO 21434], which we cover in depth in its own explainer. For fleet buyers the practical effect is simpler: cybersecurity evidence is becoming a procurement requirement, exactly as EMC and functional safety evidence did before it. Tenders for electric fleets increasingly ask for the CSMS certificate next to the [type approval] papers.
The five defences that matter most
Perfect security does not exist, but proportionate security is an engineering deliverable like any other. Five measures carry most of the weight.
1. Segment the network. The telematics unit must not sit on the same unfiltered bus as the brake and battery controllers; a gateway with an allow-list turns a remote compromise into a contained one. 2. Authenticate the critical messages. Message authentication on safety-relevant frames removes the classic CAN injection attack. 3. Harden the charging interface. Treat the charge port as an untrusted network connection: validated stacks, certificate management and no debug services in production. 4. Sign and gate the software. Secure boot plus signed updates through an R156-compliant process close the door on persistent implants. 5. Watch and respond. A vulnerability monitoring routine and an incident plan, because the threat landscape moves faster than vehicle generations.
Anatomy of a fleet incident
To make the risk concrete, walk through the scenario security teams actually plan for. Day one: a fleet management platform credential leaks, through phishing or reuse, nothing exotic. The attacker logs in as the operator and learns the fleet: vehicle positions, charging schedules, remote commands the platform offers. Day two: they test reach, perhaps a remote immobilise command intended for theft recovery, perhaps a diagnostic session through the always-on telematics link. Day three: the demand arrives, priced against the cost of a fleet standing still. At no point did anyone attack cryptography or write vehicle exploits; they used legitimate functions through a stolen identity. The defences that break this chain are unglamorous: multi-factor authentication on the platform, remote commands that require a second authorisation, telematics sessions that the vehicle logs and rate-limits, and an operator who rehearsed the response. The lesson generalises: vehicle cybersecurity is a system property, spanning the truck, the cloud and the humans, and the weakest of the three sets the level.
The fleet operator’s angle: questions to ask before buying
Most readers of this article do not build vehicles; they buy and operate them. For that seat, cybersecurity is a procurement discipline, and four questions separate serious suppliers from hopeful ones. Does the vehicle hold a UN R155 approval, and can the supplier show the CSMS certificate rather than mention it? How do software updates reach the vehicle, who signs them, and what happens to a vehicle that misses updates for a year? Which data leaves the vehicle, to whose cloud, under which contract? And when a vulnerability is published, what is the supplier’s committed notification and patch process? A supplier who answers in specifics has done the work. A supplier who answers in reassurances has not.
Operators also own part of the defence themselves: workshop access to diagnostic ports, credential discipline on fleet management platforms, and charging infrastructure that is maintained like the IT equipment it is. The strongest vehicle security in the world does not survive a depot where the diagnostics laptop has one shared password taped to the lid.
A maturity staircase that actually works
For organisations starting from zero, the workable sequence has three steps. Visibility first: inventory the connected interfaces of the fleet or platform and the data flows behind them; most organisations discover interfaces they did not know they operated. Then the basics: segmentation, authentication, signed software and platform credential hygiene, the measures that defeat the common attack chains. Then formalisation: the [ISO 21434 process] with its TARA and monitoring, which turns good practice into auditable evidence. Skipping to step three produces paperwork without protection; stopping at step two produces protection that cannot be demonstrated to an authority or a customer. The staircase exists because both halves matter.
Defence programmes take note
For military and dual-use platforms the same discipline applies with a harder edge: electromagnetic and cyber resilience are assessed together. Our [MIL-STD-461 capability] and cybersecurity assessment work share one campus for exactly that reason.
1. What is automotive cybersecurity?
Protecting vehicles and their connected services against unauthorised access and manipulation, through network design, authentication, secure software processes and monitoring across the vehicle lifecycle.
2. Are trucks and heavy machines really attack targets?
Yes. Demonstrated attacks exist for trucks and charging infrastructure, and the operational value of fleets makes them attractive extortion targets. The interfaces are the same as passenger cars; the stakes are higher.
3. What regulations apply to vehicle cybersecurity?
UN R155 (cybersecurity management) and UN R156 (software updates) as type approval conditions in UNECE markets, with ISO/SAE 21434 as the underlying engineering standard.
4. Is the charging connection a real security risk?
Yes. High-power charging sessions involve certificate handling, contract data and control communication. A poorly integrated charging stack is both a local and a remote attack path, which is why it belongs in every TARA.
5. Where should a smaller OEM or converter start?
With a threat analysis (TARA) of the actual architecture, then network segmentation and signed software as the first defences. Right-sized, this is weeks of engineering, not a corporate programme.
OVER DE AUTEUR
IntegratR Ingenieursteam
EMC & e-mobiliteit engineering, Innovatiecampus Nijmegen
IntegratR runt een zware EMC-testfaciliteit en engineeringsteam op de Innovation Campus in Nijmegen, Nederland. Het team brengt emissievrije voertuigen en machines van prototype naar gecertificeerd, en werkt samen met OEM's, Tier-1-leveranciers en scale-ups in heel Europa. Artikelen worden geschreven vanaf de testvloer, niet vanuit theorie.
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