Preventing Keyless Car Theft: The Need for Proactive Vehicle Protection

TL;DR

Car theft is hitting record highs in many markets, and this surge in stolen vehicles can be attributed in large part to the rise in keyless car theft. These advanced cyber-enabled techniques, such as CAN injection and key fob cloning, have exposed critical gaps in traditional anti-theft measures. Prevention of keyless car theft requires proactive vehicle protection strategies based on real-time detection and prevention, as well as continuous adaptation to emerging threats. PlaxidityX vDome is an AI-powered anti-theft solution designed specifically to counter modern, keyless vehicle theft techniques. Integrated within the vehicle network, vDome monitors commands in real time, detects unauthorized activity, and immediately triggers preventive actions to stop theft before it happens. 

Over the past decade, vehicle theft has undergone a profound transformation, moving from rudimentary physical methods (e.g., smashing a window and hot wiring the ignition) to highly sophisticated cyber techniques designed to bypass immobilizers, electronic locks and alarm systems in a matter of seconds.

Keyless car theft has sparked a sharp increase in stolen vehicles in Europe, North America, and elsewhere. In the UK, for example, vehicle theft incidents have risen by 75% over the past decade. Due to the powerful impact of rising car theft on the entire automotive ecosystem, keyless car theft prevention has become imperative for OEMs, fleet operators and insurance companies.

What is Keyless Car Theft?

Keyless car technology has revolutionized vehicle security and convenience. By allowing drivers to unlock and start their cars without physically inserting a key, these electronic systems have made driving simpler. However, at the same time, they have also introduced new vulnerabilities that are being exploited by tech-savvy thieves.

Unlike traditional car theft, keyless car theft techniques rely on advanced technology rather than brute force. These techniques commonly employ specialized devices, such as laptops and coding tools, to bypass security measures, unlock and start vehicles in less than a minute.

Examples of common keyless car theft techniques used by today’s thieves  are described below.

CAN Injection Attack

This technique directly exploits vulnerabilities within a vehicle’s CAN bus protocol, which serves as the central communication system for a vehicle’s Electronic Control Units (ECUs). Thieves acquire a “CAN invader” device, often available online or on the dark web. This device is physically connected to the vehicle’s network, typically via seemingly inconspicuous points like headlight wiring or a diagnostics port. Malicious CAN messages are then injected into the vehicle’s internal network, mimicking legitimate commands. This malicious injection disables the immobilizer, unlocks the doors, and starts the engine, allowing the vehicle to be stolen in under a minute.

OBD Port Hacking

OBD Port Hacking (aka Electronic Reprogramming) is the exploitation of a vehicle’s On-Board Diagnostics (OBD-II) port—a standardized 16-pin connector originally designed for mechanics to diagnose engine faults and repair systems. In such an attack, thieves break into the car, connect a specialized handheld device to the OBD-II port, and then communicate directly with the ECU to program a new, blank key fob. Thieves can use the port to bypass immobilizers, disable alarms, and even start the engine without the original key. The entire process can be completed in less than one minute and is commonly used on delivery vans and rental cars.

Key Fob Cloning

This method utilizes tools typically employed by OEMs for legitimate key programming. Thieves gain access to a car’s network by connecting these devices (often specialized tablets) to a port on the dashboard or through the headlight. Once synced, the thief can use commands to reprogram keys and seize control of the vehicle. This sophisticated operation is frequently facilitated by underground networks, such as Telegram channels, where information for hacking and stealing vehicles is traded. Thieves can obtain VINs and PINs for key duplication using tools like Autel, posing a severe security risk that enables theft, cloning and unauthorized vehicle access.

Relay Attack

Relay attacks are fast and silent – the entire process takes less than 30 seconds. Relay attacks intercept the key fob signal using two devices. One device is placed near the car owner’s key fob (e.g., in the house, a pocket, or a bag), while the second device is near the car. The first device captures the key fob’s signal and relays it to the second device, tricking the car into believing the key fob is nearby. This allows the thief to unlock the vehicle, start it, and drive away – all without needing the actual key fob.

All of these keyless car theft techniques enable thieves to gain easy entry without causing damage to the vehicle, making such thefts difficult to detect through traditional means. Thus, mitigation of these types of theft techniques dictates the need for specialized tools based on automotive cybersecurity expertise.

Soaring Car Theft by the Numbers

Fueled by keyless car theft techniques, the number of recorded theft incidents is hitting record highs in numerous markets, including the US, UK and Canada, costing the industry billions of dollars annually and causing huge disruptions to the way people live, work and travel. 

In Britain, for example, a car is stolen every 4 minutes (source: The Economist), with a total of more than 130,000 cars stolen across the UK in 2024. In the US, car theft peaked in 2023 at over one million stolen vehicles, representing a 42% annual increase since 2019. In 2024, the number of stolen vehicles still surpassed 850,000, which means a motor vehicle was stolen every 37 seconds in the United States in 2024.

According to a UK news report, 58% of vehicle thefts in the UK between April 2023-March 2024 can be attributed to keyless theft involving signal manipulation, such as key fob cloning. It’s reasonable to assume that this proportion is similar in other high-risk markets as well.

This surge in car theft is driving up costs for auto insurers and reshaping risk models across the industry. Insurance Bureau of Canada data shows that theft-related claim costs rose from $436 million in 2018 to $1.55 billion in 2023, an increase of 254% in just five years. Even with theft incidents falling slightly in 2025, insurers are still paying over $900 million annually to replace stolen vehicles.

Keyless Car Theft Prevention Has Become an Industry Priority

As described above, the surge in keyless car theft has extensive consequences across the entire vehicle ecosystem:

OEMs

Keyless car theft has become a systemic risk for automotive manufacturers, affecting brand reputation, regulatory compliance, and long-term vehicle cybersecurity strategy. As keyless theft methods proliferate, vulnerabilities can affect entire vehicle platforms, creating negative publicity and eroding customer confidence and sales. In addition, global regulations require OEMs to identify, mitigate, and manage cybersecurity risks throughout the vehicle lifecycle. As vehicle lifecycles typically span 10-15 years, OEMs must ensure that anti-theft mechanisms remain effective even as new theft techniques emerge.

What’s more, OEMs that have not taken sufficient measures to protect their vehicles from keyless car theft techniques potentially face serious legal consequences. In December 2025, for example, two popular OEMs agreed to a nationwide settlement whereby both automakers would offer free repairs to millions of models that weren’t equipped with proper anti-theft technology. This security lapse opened the door to a wave of car theft in 2022-2024 targeting these models. The cost of these repairs could exceed $500 million. 

Insurance companies

Surging car theft—especially keyless theft—is a multi-billion dollar challenge that is transforming the way auto insurance is priced, managed, and regulated worldwide. More thefts create more comprehensive coverage claims (for total loss, partial damage, or unrecovered cars), causing insurers to raise premiums to cover higher expected payouts across their clientele. To offset losses from rising car theft, many auto insurers raised comprehensive coverage rates by 10–25% across theft-prone metro regions, such as the District of Columbia, California, New Mexico, Colorado, and Nevada. 

For vehicles listed among the most frequently stolen, premiums jumped by an average of 17–20%, with high-end SUVs seeing even larger surcharges. This means drivers in high-theft regions or with highly targeted models pay noticeably more even if they are never personally victimized. Even when national theft totals start to fall—as they did in the US in 2024-2025 —premiums may remain elevated or adjust slowly because insurers set prices based on multi-year trends, prior losses, and uncertainty about whether improvements will last.

Fleet operators

Rental and shared fleets are prime targets for organized vehicle theft. Criminals easily bypass traditional GPS trackers using signal jammers, stealing high-value assets before fleet managers even realize they are gone. Increased car theft carries significant financial and operational implications for fleet operators, including higher insurance premiums and deductibles, major operational downtime, and increased costs for security upgrades. The magnitude of the financial hit can be substantial enough to affect budgets and margins, especially for smaller fleets with fewer spare vehicles. Industry sources note that one stolen fleet vehicle can cost tens of thousands of dollars after factoring in lost productivity, damage, recovery, and replacement costs.

With theft rates for commercial vehicles rising—often driven by organized crime seeking high-value cargo or parts—the consequences of a stolen vehicle loaded with equipment extend far beyond the loss of the vehicle itself. In addition, as insurance companies take steps to minimize losses, fleet operators often have to self-insure or bear the direct costs of theft losses, affecting their operational budgets. In terms of logistical disruptions, a single theft or hijacking incident can adversely impact the entire supply chain, resulting in emergency rerouting, rescheduling, and added pressure on the remaining fleet resources.

Consumers

Besides the anguish of having their car stolen, consumers are also burdened with having to pay more to insure their vehicles. At the end of the day, consumers bear the final cost when insurance companies inevitably raise premiums and deductibles, or worse, refuse to insure certain car models in high-risk areas. In London, for example, following a wave of thefts targeting high-end SUVs, JLR Range Rover owners had difficulty in obtaining insurance cover for their vehicles.

Reflecting their concerns, consumers show a strong willingness to pay extra for anti-theft tracking services, with 60% in the US, 81% in India, and 82% in Southeast Asia expressing this readiness (Deloitte 2025 Global Automotive Consumer Study).

Guidelines for Preventing Keyless Car Theft

To date, in markets where car theft is rampant, significant resources have been devoted to recovering stolen vehicles. Many car owners and fleet operators rely on stolen vehicle recovery services, often at the insistence of insurance providers. But to truly solve the problem and allay consumer concerns, OEMs must find a way to make vehicles harder to steal in the first place.

Due to the sophistication of today’s theft techniques, keyless car theft prevention requires a proactive approach to vehicle protection, based on cybersecurity expertise and real-time theft detection and prevention tools. These next generation, automotive-focused cybersecurity tools should leverage AI and other intelligent technologies to continuously adapt to emerging threats and future theft methods over time.

To support lifetime keyless car theft prevention, such a solution should be built on a multi-faceted defense approach:

1. Detect – Identify keyless theft attempts in real time, including unauthorized vehicle network manipulation (e.g., CAN injection) or unauthorized key fob registration (e.g., key cloning).
2. Prevent – Upon detection, immediately trigger a theft prevention action in real time. Keyless car theft prevention necessitates the ability to differentiate between valid and invalid scenarios (e.g., reprogramming a new key) and blocking only the invalid ones.
3. Future-Proof – Support the addition of new capabilities seamlessly to defend against new attack vectors and evolving threats. Keyless car theft prevention solutions should support OTA updates based on adaptive threat intelligence for as long as the car is on the road.

Why Aftermarket Keyless Car Theft Prevention Is Critical for OEMs

Vehicle manufacturers are now designing new models with cybersecurity as a core requirement in order to meet emerging regulations and standards such as UNR 155 and ISO 21434. This effort spans secure coding practices, in-vehicle intrusion detection and prevention systems, and fleet-level protection through Vehicle Security Operations Center (VSOC) capabilities.

However, with regard to anti-theft measures, the industry is still lagging behind. Although OEMs are interested in adding anti-theft functions and services, these measures cannot be fully retrofitted. Even if OEMs decide today to incorporate new safeguards to curb rising car theft, several years will pass before these enhanced models are widely deployed. Thus, the question remains: how can the vast number of vehicles already on the road be protected?

When a specific vulnerability is identified in a vehicle platform, the OEM can issue a software update to the impacted cars. However, practically speaking, it’s impossible to fix every weakness in every vehicle. If this were feasible, keyless car theft would be minimal to non-existent. Moreover, with millions of vehicles on the road, distributing and installing updates across the entire fleet takes considerable time, leaving a window of exposure in the interim period.

This gap is driving demand for advanced aftermarket anti-theft services built on the approach described above. The scale of the car theft problem, combined with customers’ readiness to pay for better protection, has opened the door for innovative anti-theft services aimed specifically at keyless attack vectors.

How vDome Prevents Keyless Car Theft

PlaxidityX vDome is an AI-powered, keyless car theft prevention software solution that protects vehicles from keyless car theft techniques such as CAN injection, key fob replication and other unauthorized manipulations of vehicle security measures. Combining an in-vehicle agent(TDPX) with continuous cloud-based threat intelligence, vDome acts as an embedded shield that prevents theft at the source.

Moving beyond passive tracking, vDome instantly detects theft attempts, and immediately triggers a prevention action to block the attempted theft before the engine even starts. Ongoing updates based on threat intelligence protect the vehicle against future theft techniques and evolving attack vectors. This proven technology has already been integrated into Vodafone Automotive’s anti theft solution.

Contact us to learn more about how vDome can help you protect vehicles from the latest cyber theft techniques.

FAQ

• What is keyless car theft?

  Keyless car technology allows drivers to unlock and start their cars without physically inserting a key. While revolutionizing vehicle security and convenience, these systems have also introduced vulnerabilities that are being exploited by tech-savvy thieves. Keyless car theft techniques typically employ specialized devices, such as laptops and coding tools, to unlock and start vehicles in less than a minute. Examples of common keyless car theft techniques used today include CAN injection, OBD port hacking, key fob cloning, and relay attacks.

• Why are traditional anti-theft solutions ineffective in preventing keyless car theft?

  Traditional anti-theft systems focus on engine immobilization, alarms and GPS tracking to deter potential thieves. While effective against mechanical theft, these measures cannot stop keyless techniques that exploit the connectivity, in-vehicle networks and software vulnerabilities in today’s vehicles. Mitigation of these types of theft techniques dictates the need for specialized tools based on cybersecurity expertise.

• How long does it take to steal a car using keyless theft techniques?

  Keyless car theft techniques rely on advanced technology, and their effectiveness can be attributed to the speed and silence of their execution. CAN injection and relay attacks, for example, allow thieves to unlock the car, start the engine and drive away in less than 30 seconds. In addition to their swiftness, keyless car theft techniques enable thieves to gain easy entry without causing damage to the vehicle, making such thefts difficult to detect through traditional means.

• What is a CAN injection attack?

  This technique directly exploits vulnerabilities within a vehicle’s internal communication network (i.e., CAN bus). This network controls door locks, engine ignition and other critical vehicle functions Thieves use a “CAN invader” device to physically connect to the vehicle’s network, typically via seemingly inconspicuous points like headlight wiring or a diagnostics port. Malicious CAN messages are then injected into the vehicle’s internal network, mimicking legitimate commands (e.g., “start engine”). This malicious injection disables the immobilizer, unlocks the doors, and starts the engine.

• What is the best way to prevent keyless car theft?

  The next generation of vehicle protection requires proactive, adaptive, and intelligent systems. To prevent keyless theft, OEMs need an active, embedded agent that prevents theft at the source – rather than tracking a vehicle after it’s gone. Platforms like vDome that combine an in-vehicle agent with cloud-based threat intelligence can instantly detect and prevent theft attempts with zero false alarms, while providing lifetime protection against future threats as they emerge. By integrating with ECUs and aftermarket devices, vDome offers layered defense against CAN injection and key fob replication attacks.