False Positions at Sea: Distinguishing AIS Spoofing from GNSS Interference
Synopsis
An abnormal vessel track looks the same whether it's deliberate concealment or a ship caught in a jammed region, and treating them alike leads to the wrong call.
Kpler analysts will discuss how to distinguish between vessel-level AIS spoofing from area-wide GNSS interference, so you can respond to each with evidence, not assumption.
What you'll learn
- How GNSS faults surface as AIS anomalies, and why consistent onboard systems are weak proof of a real position
- A four-level confidence framework for moving from an anomaly to a defensible attribution, and when to stop short of a vessel-level finding
- What Kpler's sanctions data shows about AIS spoofing as an early risk signal, and how to match your due diligence response to the evidence
Meet the speakers
Ana Subasic
Ana Subasic is a trade risk analyst at Kpler, where she combines energy market fundamentals, geopolitical analysis, and legal investigation to assess emerging trade risks, structures and sanctions circumvention. After joining Kpler in 2022 as an LNG market analyst, she transitioned into Risk and Compliance in 2025 to strengthen the team’s forward-looking analytical capabilities on a the cross-commodity scale. Her work focuses on shadow and dark trade investigations, including breaking intelligence and insights into high-risk commodity flows. Ana serves as a key voice within Risk and Compliance, translating regulatory developments, sanctions dynamics, and geopolitical shifts into structured assessments and actionable intelligence for clients.
Dimitris Ampatzidis
Dimitris is a Maritime Risk & Compliance Manager with deep shipping industry expertise in risk assessment, governance, and data analytics. He has led the launch of industry-standard risk products and developed comprehensive sanctions and compliance protocols. At Lloyd’s Register, he was the go-to expert for Port State Control (PSC) analytics, delivering training to shipping professionals and developing emissions reporting and sanctions frameworks. Previously, he helped build the RISK4SEA platform at SAFETY4SEA. He holds Master’s degrees in IT Project Management and Information Systems, and a Bachelor’s in Statistics and Insurance Science.
Yuan Li
Li Yuan is a Junior Risk & Compliance Analyst at Kpler, based in Singapore. She works on data-driven risk analysis, supporting the Risk & Compliance team through deeper exploration of maritime data and ongoing experimentation with predictive insights. She holds a Bachelor’s degree in Data Science and Analytics, with a second major in Economics, from the National University of Singapore. With a strong analytical foundation, she helps transform complex datasets and behavioural signals into practical risk insights that support compliance workflows and forward-looking risk assessment.
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