Electric Vehicles (EVs)

What Electric Vehicles Are and Why They Matter to Security Teams

Electric vehicles combine propulsion, control software, high-capacity batteries and charging interfaces. That makes them not just a transport category, but a connected cyber-physical system with software, power and operational dependencies that can be attacked, misconfigured or disrupted.

For security practitioners, the important point is that the vehicle’s behaviour depends on the integrity of onboard control systems and the trustworthiness of external services, including charging infrastructure, fleet platforms and update channels. A compromise in any of those layers can affect safety, availability and data integrity at once.

Core Systems Behind EV Operation

Most EV risk concentrates around three technical layers: battery management, drivetrain and vehicle control, and charging or telemetry interfaces. Battery management systems regulate charging and discharge, while vehicle control logic coordinates torque, braking and operational state. Charging paths and management portals add a networked dependency that extends the attack surface beyond the vehicle itself.

Those layers are tightly coupled. If battery telemetry is inaccurate, control logic may make unsafe decisions. If charging communications are manipulated, the vehicle or charger may behave unexpectedly. If remote management is weakly protected, operators may lose visibility into vehicle state, location or health.

How EV Exposure Usually Arises

Exposure often starts with inventory gaps. Organisations may know they own vehicles, but not the software versions, charging assets, telematics vendors or administrative accounts attached to them. Internet-reachable portals, exposed APIs and unmanaged third-party services widen that exposure further.

Vendor advisories matter because EVs are software-defined products with long service lives. Fleet operators should track notices from the vehicle maker, battery supplier and charging platform provider, then reconcile those notices against their own asset inventory and connectivity model. Security reviews should also include maintenance laptops, mobile apps and remote access paths used to service the fleet.

Operational Controls and Recovery Expectations

EV security is strongest when organisations treat vehicles, chargers and fleet tools as managed assets rather than isolated products. That means restricting administrative access, segmenting management networks, verifying update sources and limiting what connected services can reach the vehicle or charger.

When a patch cannot be applied immediately, compensating controls should focus on reducing remote exposure and preserving safe operation. In practice, that can mean isolating affected vehicles or chargers, disabling unnecessary remote functions, tightening monitoring and using vendor-supported fallback procedures until remediation is complete.

After any suspected compromise, the review should include vehicle logs, telematics data, charger activity and any linked accounts or tokens used for fleet control. If an attacker used a trusted service account or remote management credential, that access path should be revoked and reissued where appropriate.

Risk and Threat Considerations

EVs create a blended safety and cyber risk because software and connectivity are part of normal operation. A compromise can affect charging, mobility, fleet availability or even physical safety if attackers or faulty integrations influence control decisions or battery behaviour.

Failure mechanism: Attackers, misconfigurations or supply-chain weaknesses can abuse remote management, exposed APIs, weak update trust or charging interfaces to alter vehicle state, interrupt service or gain persistent access.

Impact: The result can be stranded vehicles, disrupted charging, stolen operational data, unsafe behaviour, fleet downtime or broader compromise of connected vehicle ecosystems.

Practitioner Guidance

Why practitioners should care: EVs are operational technology with enterprise dependencies, so ownership needs to span transport, IT, security and facilities teams. No single team usually sees the full exposure picture.

What to watch for: Treat unknown chargers, unmanaged apps, stale telematics integrations and untracked firmware as red flags. Those are often the first signs that an EV environment has drifted beyond effective control.

Practitioner takeaway: The safest EV programmes are the ones that manage the vehicle, its charging ecosystem and its administrative access as one control surface, not as separate problems.

Related resources from NHI Mgmt Group

• Why does reactive quality management increase safety and recall risk in electric vehicles?
• Why do connected vehicles create problems for traditional IAM models?
• Why do connected vehicles create machine identity risk?
• How should automotive teams manage certificate lifecycles for connected vehicles?