PhD position in Cross-Platform Tracking and privacy risks in LLMs

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Cybersecurity Group
Internet Analytics Group
Deadline for receipt of applications: August 14, 2026 23:59 AoE (15 August 2026, 13:59h)

The Cybersecurity ( ) and Internet Analytics Groups ( ) led by Dr. Guillermo Suarez-Tangil ( ) and Dr. Narseo Vallina-Rodriguez ( ) at IMDEA Networks Institute have a joint opening for one PhD student in the area of IoT Security and Privacy.

The research will involve both empirical and methodological contributions :

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- Developing automated frameworks to detect and analyze cross-platform data flows using network measurements, static and dynamic app analysis , and large-scale testing infrastructures .
- Studying deterministic and probabilistic tracking mechanisms (e.g., shared identifiers, IP correlation, fingerprinting (see [1]), or behavioral synchronization).




- Investigating how tracking companies and SDKs operate across device and ecosystem boundaries.
- Designing privacy-preserving countermeasures that balance usability, scalability, and effectiveness.

This PhD project offers the opportunity to make fundamental contributions to an emerging research field with high societal, regulatory, and industrial relevance , while working at the intersection of cybersecurity, privacy, data analysis, and network measurement . In fact, the Ph.D. candidate’s contributions will advance our ability to detect and understand how users are tracked across devices, apps, and ecosystems , providing empirical evidence and technical insights to shape privacy engineering and policy at a integral scale, with a special focus on the privacy risks of LM-based architectures.

The position offers:

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- Full-time paid position for up to 4 years, with competitive salary and benefits.
- Hands-on training in scalable software/firmware analysis and reverse engineeri

📌 PhD position in Cross-Platform Tracking and privacy risks in LLMs (Madrid)
🏢 Fundación Imdea Networks
📍 Madrid