ISO-SAE 21434 — Automotive Cybersecurity

Critical Systems Analysis
Critical Systems Analysis
  • 0.0 (0)
  • Technology

"ISO-SAE 21434 — Automotive Cybersecurity" is a serial video course from CSA, published weekly in strict curriculum order — building from foundational terms and structure through lifecycle practice to advanced, assessor-level topics. Designed for working functional-safety engineers and managers, not beginners or students. CSA is a functional safety, reliability, and certification consultancy serving robotics, autonomous systems, transportation, and industrial equipment manufacturers. CSA provides end-to-end safety engineering services: preliminary gap analyses and safety audits, SIL/PL determination, FMEA and FMEDA execution, fault tree analysis, safety case development, hardware metrics (SPFM/LFM/PMHF), lifecycle documentation, and embedded safety engineering support. CSA engineers work alongside product teams from architecture through final functional safety assessment, and support companies seeking NRTL, CE, ATEX, ISO 26262, and UL 4600 marks. Contact: Sales@criticalsa.com. This series is part of the CSA Functional Safety Network — a coordinated set of weekly video courses covering IEC 61508, ISO 26262, ISO/SAE 21434, SOTIF (ISO 21448), UL 4600, IEC 62443, ISO/PAS 8800, ISO 13849, machinery safety, safety analysis methods, and more. Each show links to the others so practitioners can follow the thread that matches their project.

  1. Aug 22

    ISO 21434: End of cybersecurity support and decommissioning

    So let's follow that cybersecurity lifecycle all the way to its final chapter. Past design. Past production. Past all those over-the-air updates shipped to cars in the field. We're heading to the moment most teams never plan for: the moment the maker decides to stop. In ISO slash SAE twenty-one four thirty-four, that's Clause fourteen — End of cybersecurity support and decommissioning. Part of the Critical Systems Analysis functional-safety series on ISO 21434. In this episode: Here's the trap.This is Clause fourteen, the last phase of the whole cybersecurity lifecycle.End of cybersecurity support is the point where the organization stops looking after that item's cybersecurity.And that's exactly why the timing matters.So who is actually accountable for the ending? This traces straight back to the front of the standard: organizational cybersecurity management.Here's the governance backbone: the cybersecurity plan.Reference: Clause 14 of ISO/SAE 21434:2021 is titled 'End of cybersecurity support and decommissioning'; it contains two distinct concepts — end of cybersecurity support and decommissioning ( More in this series: IEC 62443 — Industrial Cybersecurity Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    ISO 21434: End of cybersecurity support and decommissioning

  2. Aug 22

    ISO 21434: Product development - Design

    Zoom all the way in now. Past the family of standards, past the whole cybersecurity lifecycle, down to one clause: ISO slash SAE twenty-one four thirty-four, Clause 10 — Product development. And inside Clause 10, the one activity we care about today. Design. Part of the Critical Systems Analysis functional-safety series on ISO 21434. In this episode: Start by finding yourself on the V.Here's what actually lands on your desk.Now draw the system that requirement lives in.A goal sitting at the top of the page protects nothing.Let's motivate all this work with a failure.Zoom into one control and watch it work.Reference: In ISO/SAE 21434:2021 the design activity sits within Clause 10 (Product development). The specific design sub-clause is 10.4.1; I referenced 'Clause 10' and described the activit More in this series: IEC 62443 — Industrial Cybersecurity Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    ISO 21434: Product development - Design

  3. Aug 22

    ISO 21434: Cyber Security Training

    So let's zoom all the way in — past the lifecycle diagram, past the management plan — down to the beating heart of ISO slash SAE twenty-one four thirty-four: the threat analysis and risk assessment, the TARA, laid out in Clause fifteen. Part of the Critical Systems Analysis functional-safety series on ISO 21434. In this episode: Right — you've seen why cars need a cybersecurity standard, and where twenty-one four thirty-four sits in the family.First, meet the thing we're chasing: a vulnerability.Now watch it travel.So here's the fork the whole software-and-systematic world turns on.So the standard makes a move that almost sounds like a confession.And that dial has a name: the Cybersecurity Assurance Level — CAL one through CAL four.Reference: Clause 15 in ISO/SAE 21434:2021 is titled 'Threat analysis and risk assessment methods' (TARA). This is believed correct; verify the clause number against the published standard be More in this series: IEC 62443 — Industrial Cybersecurity Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    ISO 21434: Cyber Security Training

  4. Aug 22

    ISO 21434: Cybersecurity terms

    So far we've walked the whole cybersecurity lifecycle from a distance. Now let's zoom all the way in on the one clause where the risk actually gets sized up. In ISO S A E twenty-one four thirty-four, that job belongs to the threat analysis and risk assessment — everyone just calls it TARA — and it lives in clause fifteen. This is the engine room. Part of the Critical Systems Analysis functional-safety series on ISO 21434. In this episode: Let's put the subject on the table.Move one, name what can go wrong.Before we size anything, know where you're standing.Move two, and it's the heart of the whole thing.Take the first dial, impact.The second dial, attack feasibility — how realistic the attack is, rated from very low up to high.Reference: Clause 15 of ISO/SAE 21434:2021 contains the TARA methods. The step sequence used here (asset identification, threat scenario identification, impact rating, attack path analysis, a More in this series: IEC 62443 — Industrial Cybersecurity Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    ISO 21434: Cybersecurity terms

  5. Aug 22

    ISO 21434: Case Study

    So far we've flown over the whole cybersecurity lifecycle. Now drop down into the part almost nobody films: the management clauses. Part of the Critical Systems Analysis functional-safety series on ISO 21434. In this episode: Here's the trap.The standard splits it in two.So who's actually on the hook? At the top, governance is a top-management job — they set the policy, fund it, and answer for it if the culture rewards shipping over securing.The spine of the whole thing is the cybersecurity plan.Here's the rule that keeps everyone honest: every activity has to leave a trace.All those work products roll up into one thing: the cybersecurity case.Reference: Clause-level mapping is accurate for ISO/SAE 21434:2021: Clause 5 = organizational cybersecurity management, Clause 6 = project-dependent cybersecurity management, Clause 7 = distr More in this series: The V-Model and Safety Lifecycle Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    ISO 21434: Case Study

  6. Aug 22

    ISO 21434: Vulnerability Analysis

    So far we have zoomed out to the whole cybersecurity lifecycle. Now zoom all the way in, to one clause that keeps working the entire time your vehicle is on the road. In ISO S-A-E twenty-one four thirty-four, Clause 8 covers continual cybersecurity activities, the part of the standard that never stops after the product ships. Part of the Critical Systems Analysis functional-safety series on ISO 21434. In this episode: This is ISO S-A-E twenty-one four thirty-four, road vehicles, cybersecurity engineering.First, name what can go wrong, because twenty-one four thirty-four is picky about words.Locate yourself.Why sweat a single weakness.Here is the move that unites this whole family of standards.Zoom in on feasibility for a second, because it is where engineers argue most.Reference: Vulnerability analysis sits in ISO/SAE 21434 Clause 8, 'Continual cybersecurity activities.' I state the subclause order as monitoring, event assessment, vulnerability analysis, vu More in this series: Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    ISO 21434: Vulnerability Analysis

  7. Aug 22

    ISO 21434: Cybersecurity Verification

    And that's the full ISO 21434 lifecycle — from organizational setup, through the concept phase, the threat analysis, and into development. Now watch where the marker lands. Slide past the concept work, past the design, and stop right here: the back half of product development, clause 10, and its partner, clause 11. Part of the Critical Systems Analysis functional-safety series on ISO 21434. In this episode: Here's the clause.Keep these two lanes separate in your head.This is why the development V matters.So how do you actually verify? The standard won't let you pick one favorite tool.Validation is where a lot of teams get surprised.Not every function earns the same scrutiny.Reference: Clause-level mapping used and believed correct for ISO/SAE 21434:2021: Clause 6 (project-dependent cybersecurity management — includes cybersecurity case, cybersecurity assessment, More in this series: The V-Model and Safety Lifecycle Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    ISO 21434: Cybersecurity Verification

  8. Aug 22

    ISO 21434: Product Development - Requirements

    So let's zoom all the way in. The reusable stuff is behind us: why cybersecurity matters, the family of standards, the shape of the ISO 21434 lifecycle. Now we land on one clause, Product Development. In ISO 21434 this is Clause 10, and it sits right after the Concept phase, Clause 9. Here's the handoff. Part of the Critical Systems Analysis functional-safety series on ISO 21434. In this episode: This is the clause on the table today: Product Development, requirements.Here's the reframe.Let's define the term plainly.This is the chain that has to hold.Concrete example.So what makes a requirement fit to ship into design? Run this check on every one.Reference: ISO/SAE 21434:2021 places Product Development at Clause 10 and the Concept phase at Clause 9; the Concept phase is where the item definition, TARA (threat analysis and risk assessm More in this series: IEC 62443 — Industrial Cybersecurity Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    ISO 21434: Product Development - Requirements
See All (23)

About

"ISO-SAE 21434 — Automotive Cybersecurity" is a serial video course from CSA, published weekly in strict curriculum order — building from foundational terms and structure through lifecycle practice to advanced, assessor-level topics. Designed for working functional-safety engineers and managers, not beginners or students. CSA is a functional safety, reliability, and certification consultancy serving robotics, autonomous systems, transportation, and industrial equipment manufacturers. CSA provides end-to-end safety engineering services: preliminary gap analyses and safety audits, SIL/PL determination, FMEA and FMEDA execution, fault tree analysis, safety case development, hardware metrics (SPFM/LFM/PMHF), lifecycle documentation, and embedded safety engineering support. CSA engineers work alongside product teams from architecture through final functional safety assessment, and support companies seeking NRTL, CE, ATEX, ISO 26262, and UL 4600 marks. Contact: Sales@criticalsa.com. This series is part of the CSA Functional Safety Network — a coordinated set of weekly video courses covering IEC 61508, ISO 26262, ISO/SAE 21434, SOTIF (ISO 21448), UL 4600, IEC 62443, ISO/PAS 8800, ISO 13849, machinery safety, safety analysis methods, and more. Each show links to the others so practitioners can follow the thread that matches their project.

Information

More From Critical Systems Analysis