Advisories
Automakers Share PII from Connected Cars with Advertisers and Data Brokers
A study shows that 19 of 21 major automakers routinely transmit personally identifiable data from connected vehicles to advertising and data‑broker networks. The data includes names, email addresses, VINs, and precise geolocations, and is shared with tech giants such as Google, Amazon, and Meta. Defenders should audit app integrations, enforce data‑minimization, and monitor outbound telemetry for compliance.
What Happened
Recent research from Northeastern University and Consumer Reports found that 19 of 21 major automakers routinely forward personally identifiable data from connected‑car systems to third‑party advertisers, analytics firms, and data brokers. The study examined 30 vehicle‑connected apps; 28 shared data with at least one external partner, and 7 transmitted PII such as names, email addresses, and precise GPS coordinates.
Impact
Automotive data now flows into the ecosystems of Google, Amazon, Microsoft, Meta, Reddit, and Pinterest, enabling advertisers to target drivers with highly granular profiles. General Motors’ companion apps (myCadillac, myChevrolet, myBuick, myGMC) and apps from Honda, Nissan, and Lincoln bundle VINs with location or email data, creating a rich dataset for data brokers. California regulators fined GM over $12 million and barred it from sharing driver data with credit‑reporting agencies and data brokers for five years.
What Defenders Should Do
- Audit all connected‑car app integrations to identify outbound telemetry to ad‑tech and data‑broker domains.
- Enforce strict data‑minimization policies: restrict app permissions to only the data required for core functionality.
- Implement network segmentation and outbound filtering to block or log traffic to known advertising and analytics endpoints.
- Review and update privacy‑by‑design controls in vehicle software stacks, ensuring that PII is not transmitted without explicit user consent.
- Stay informed on regulatory actions (e.g., California’s enforcement against GM) and adjust compliance programs accordingly.
Automotive privacy is no longer a theoretical risk; it is an operational reality that requires immediate attention from SecOps and system administrators.