Shreyansh writes about automotive cybersecurity, safety-critical engineering, ISO/SAE 21434, embedded systems, and the practical engineering decisions behind critical vehicle programmes.
Founder & CTO of Agnile Technologies, where he leads the company's automotive cybersecurity engineering practice and directs development of KAVACH — Agnile's AI-native ISO/SAE 21434 workspace for automotive cybersecurity engineering. His focus is the intersection of systematic threat analysis and machine-readable work products.
He is certified for ISO/SAE 21434 and works day-to-day on TARA methodology, STRIDE-style threat modeling for vehicle E/E architectures, and the UNECE R155 CSMS evidence package. His technical interests span AUTOSAR Classic and Adaptive platforms, HSM-backed secure communication, and how AI-native tooling structures the cybersecurity workflow without eroding engineer-in-the-loop review.
Areas of Expertise
- ISO/SAE 21434
- Automotive Cybersecurity
- Threat Analysis and Risk Assessment (TARA)
- UNECE R155 CSMS
- AUTOSAR
- ISO 26262 Functional Safety
Articles by Shreyansh
- Cybersecurity10 min
UNECE R155 Compliance Roadmap: From CSMS Audit to Type Approval
A practical 12–18 month UNECE R155 compliance roadmap for vehicle programmes — CSMS audit, Annex 5 threats, Type Approval, and post-2024 enforcement reality.
- KAVACH9 min
The ROI of Automated TARA: When Does Automation Pay Back?
A practical model for the 3-year TCO of manual versus automated TARA, payback-period sensitivity by program count, and where automation actually changes programme economics.
- Cybersecurity12 min
Automotive Penetration Testing: A Methodology for ECUs, Gateways, and V2X
An architect-grade penetration testing methodology for ECUs, gateways, and V2X — scope pyramid, tool categories, and the test patterns that catch real vulnerabilities.
- Cybersecurity11 min
HSM Integration for Automotive ECUs: From EVITA Light to Full
How to size, integrate, and verify a Hardware Security Module for automotive ECUs — EVITA Light/Medium/Full, host-HSM interaction, and rollout patterns.
- Cybersecurity11 min
Secure Boot Implementation for Automotive ECUs: Chain of Trust from ROM to Application
Designing a verifiable chain of trust from BootROM through bootloader to application — signature schemes, rollback protection, and recovery patterns.
- Embedded Software10 min
SecOC in AUTOSAR Classic: Message Authentication at Bus Level
Secure Onboard Communication in AUTOSAR Classic — frame format, freshness counters, MAC truncation tradeoffs, and integration patterns at bus level.
- Embedded Software11 min
AUTOSAR Crypto Stack: Csm, CryIf, KeyM — Implementation Guide for Automotive ECUs
Architecture and integration patterns for the AUTOSAR Crypto Stack — Csm, CryIf, Crypto Driver, and KeyM — with the job-API call sequence and pitfalls to avoid.
- Cybersecurity9 min
Cybersecurity Interface Agreements (CIA) Under ISO/SAE 21434 Clause 7: Template and Negotiation Guide
How to draft and negotiate a Cybersecurity Interface Agreement under ISO/SAE 21434 Clause 7 — RASIC matrix, clause checklist, and the patterns that hold up under audit.
- Embedded Software10 min
Secure Automotive Device Driver Development: From MCAL to Complex Device Drivers
Cybersecurity patterns for MCAL and Complex Device Driver development — the ISR security checklist, requirements by driver layer, and the integration tradeoffs.
- Cybersecurity13 min
Every ISO/SAE 21434 Work Product, Demystified
ISO/SAE 21434 defines work products across the cybersecurity engineering lifecycle (Clauses 5–15). The complete checklist with review priorities and UNECE R155 mapping.
- Functional Safety12 min
What Is ISO 26262? A Complete Guide to Automotive Functional Safety
ISO 26262:2018 is the 12-part automotive functional safety standard. Complete breakdown of HARA, ASIL derivation, decomposition, and the FuSa + Cyber convergence.
- ISO/SAE 214346 min
ISO/SAE 21434 vs UNECE R155: What’s the Difference?
Engineering standard vs regulation — understanding how ISO/SAE 21434 and UNECE R155 work together for Automotive Cybersecurity compliance.
- Industry7 min
Automotive Cybersecurity in India: The Growing Opportunity
India’s AIS 189/190 regulations, Bengaluru’s emerging cybersecurity hub, and the opportunity for Indian automotive companies.
- Functional Safety5 min
ISO 26262 ASIL Levels Explained: A to D
Understanding Automotive Safety Integrity Levels — how ASIL is determined and what each level means for development.
- Embedded Software6 min
AUTOSAR Classic vs Adaptive Platform: A Developer’s Guide
Choosing between AUTOSAR Classic (OSEK-based, static) and Adaptive (POSIX-based, dynamic) for your next ECU project.
- Cybersecurity8 min
What Is TARA in Automotive Cybersecurity? A Practical Guide
The systematic Cybersecurity analysis methodology defined in ISO/SAE 21434 Clause 15 — from Threat Identification to Risk Treatment.
- Cybersecurity6 min
STRIDE Threat Modeling for Automotive ECUs
Adapting Microsoft’s STRIDE framework for vehicle architectures — ECUs, CAN buses, V2X interfaces, and data flows.
- KAVACH5 min
Manual TARA vs Automated TARA: Why Spreadsheets Don’t Scale
How AI-powered TARA platforms reduce cycle time from weeks to hours with consistent Risk Scoring and automated Work Products.
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Agnile supports safety-, security-, and mission-critical engineering programmes across automotive, aerospace, embedded, IoT, enterprise software, cybersecurity, safety, V&V, digital engineering, and KAVACH.