ECU‑level runtime defense with continuous integrity attestation—built for OEMs and Tier‑1 suppliers.
Connectivity, OTA updates, and expanded infotainment increase exposure across modern vehicle architectures. A compromise may start outside the ECU—but it often ends at safety‑relevant control logic.
Summary — Remote interfaces can be targeted long before an attacker reaches safety-adjacent ECU logic.
Common entry points
• Telematics + cellular backhaul
• Wi-Fi / Bluetooth pairing surfaces
• Companion apps + cloud APIs
• IVI browser/media parsing surfaces
Why it matters — A remote foothold can pivot across subsystems and reach ECUs that control core functions.
Summary — Shared components and third-party code create repeatable exploitation paths across vehicle lines.
Common risk areas
• Reused code across trims/platforms
• Third-party middleware + drivers
• Supplier build pipeline variability
• Firmware packaging/signing mistakes
Why it matters — When patching is slow or costly, runtime resilience helps reduce blast radius between updates.
Summary — Update and service workflows keep vehicles maintainable—but they also expand access over time.
Common watchpoints
• OTA validation + rollback logic
• Calibration/config changes
• Diagnostic services + service tooling
• In-field service/repair environments
Why it matters — Real-world updates and servicing can introduce new pathways long after launch, especially across fleets.
Summary — After initial access, lateral movement often continues across internal networks and trust boundaries.
Common considerations
• CAN/LIN message injection or spoofing
• Ethernet domains + gateway boundaries
• Segmentation gaps (IVI/telematics → safety-adjacent)
• Gateway rules + diagnostic access paths
Why it matters — Network controls help, but ECU-level runtime protection adds a layer when threats get inside the perimeter.
Focus protection on the embedded systems that matter most—across passenger, commercial, and industrial platforms. Prioritize ECUs that are remotely reachable, bridge networks, or perform safety‑adjacent functions.
Enforce trust boundaries across in‑vehicle networks. compromise
Harden backend‑to‑vehicle connectivity and remote entry paths.
Protect critical compute from runtime manipulation and drift.
Defend widely deployed controllers and high‑volume firmware targets.
Add runtime resilience where reliability and safety matter most.
Protect battery and charging logic from exploitation and drift.
Cover long lifecycles, remote ops, and heterogeneous deployments.
Symbiote delivers protection at ECU level with real-time, continuous integrity attestation—designed to ensure authorized software keeps running while preventing unauthorized code or commands from executing.
SYMBIOTE AUTOMOTIVE RUNTIME DEFENSE FEATURES
Designed for constrained environments.
Address buyer and engineering realities: long patch cycles, mixed platforms, strict timing budgets, and third‑party components across the supply chain.
Harden the device layer when patch cycles are long and safety matters.
Deliver stronger security value without invasive platform redesign.
Support ISO/SAE 21434 engineering, and align controls and evidence with UNECE WP.29 R155 (CSMS) and R156 (SUMS) across the vehicle lifecycle.
Build stronger device-layer security claims with runtime integrity controls and evidence that supports reviews and audit prep.
Improve detection and response at the ECU layer to strengthen cybersecurity management evidence (scope depends on program and architecture).
Quick answers to common OEM and Tier‑1 questions about deploying runtime integrity defenses on ECUs.
Automotive ECU security focuses on protecting the controllers that run vehicle functions. Here, that means firmware‑level runtime defense that preserves code and memory integrity so unauthorized behavior is detected and can be blocked.
Not necessarily. Symbiote can be deployed to firmware without required source code access, though source access can accelerate the process.
RBS states Symbiote can protect resource‑constrained vehicular ECUs without impacting real‑time performance requirements.
Secure boot protects initial instructions; many attacks target runtime behavior after boot. Runtime defense adds safeguards for live code, processes, and critical data while the ECU is operating.
These frameworks emphasize lifecycle cybersecurity engineering and management systems. Embedded runtime integrity controls can support resilience objectives and evidence—depending on your program scope and audit needs.
Contact Red Balloon Security to explore our suite of dynamic embedded security solutions and secure your critical hardware today.
