Digital North | Writing https://digitalnorth.in/blog/ Field notes on automotive cybersecurity, V2X post-quantum migration, vehicle security operations, and the regulations that shape them. en Sun, 24 May 2026 12:00:00 GMT Field notes on V2X PQC migration: where the standards leave you stranded https://digitalnorth.in/blog/v2x-pqc-migration-field-notes/ https://digitalnorth.in/blog/v2x-pqc-migration-field-notes/ Sun, 24 May 2026 12:00:00 GMT V2X · POST-QUANTUM · MIGRATION Five problem classes we see in real V2X PQC migrations, with the numerical shape from engagements we have run. Composite field notes for OEM architects planning their roadmap. Law enforcement and post-quantum cryptography in vehicles: clues toward a framework https://digitalnorth.in/blog/lea-pqc-implications/ https://digitalnorth.in/blog/lea-pqc-implications/ Sun, 22 Feb 2026 12:00:00 GMT LAW ENFORCEMENT · POST-QUANTUM · FORENSICS When V2X fleets migrate to post-quantum cryptography, lawful-access workflows change in ways the existing standards do not yet address. A structured argument toward the framework that needs to be built, written for law enforcement and the people who will write the standards. Cryptographic agility is the only honest answer to 'when will quantum arrive?' https://digitalnorth.in/blog/cryptographic-agility/ https://digitalnorth.in/blog/cryptographic-agility/ Thu, 19 Feb 2026 12:00:00 GMT POST-QUANTUM · ARCHITECTURE The argument that a cryptographically-relevant quantum computer is decades away is true. The argument that it is months away is also occasionally made. Neither is a planning horizon. Here is what is. The PSIRT playbook nobody writes down https://digitalnorth.in/blog/psirt-playbook/ https://digitalnorth.in/blog/psirt-playbook/ Fri, 22 Aug 2025 12:00:00 GMT PSIRT · INCIDENT RESPONSE · OEM Field notes from running automotive vulnerability response across five OEMs and a dozen real disclosures. The official process and the working process are not the same document. What V2X PQC migration actually costs: a field-notes TCO https://digitalnorth.in/blog/v2x-pqc-migration-cost-benefit/ https://digitalnorth.in/blog/v2x-pqc-migration-cost-benefit/ Tue, 18 Feb 2025 12:00:00 GMT V2X · POST-QUANTUM · COST A field-notes TCO for V2X PQC migration. Six cost categories, four fleet profiles, ranges anchored to engagements we have run. For the OEM architect defending the budget internally. Why our V2X bandwidth budget breaks the moment you add ML-DSA https://digitalnorth.in/blog/v2x-bandwidth-budget/ https://digitalnorth.in/blog/v2x-bandwidth-budget/ Fri, 08 Nov 2024 12:00:00 GMT V2X · POST-QUANTUM · BANDWIDTH The post-quantum standards landed in 2024. The 1,400-byte V2X frame ceiling did not move. Here is what actually happens when you try to drop ML-DSA into a Basic Safety Message, and what we ship instead. Reading R155 like a security engineer, not a lawyer https://digitalnorth.in/blog/reading-r155-like-an-engineer/ https://digitalnorth.in/blog/reading-r155-like-an-engineer/ Mon, 15 Apr 2024 12:00:00 GMT REGULATION · COMPLIANCE Most R155 readings happen in compliance teams. That's a mistake. The clauses are written for engineers if you know which ones to read first.