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Planted Anomalies in Networks

Project description

Detecting hidden malicious structures in complex networks

Online platforms, communication systems and AI-driven infrastructures, are vulnerable to hidden malicious actors that blend into normal activity. Current detection methods fail to account for the complex, structured nature of real-world networks. Supported by the Marie Skłodowska-Curie Actions programme, the PAiNe project is using a rigorous mathematical approach to develop realistic network models with embedded anomalies, identify the limits of when such anomalies can be reliably detected and design efficient algorithms that can recover them with proven guarantees. These methods will then be tested on simulated and real-world data, with all results and software released as open source to support applications in cybersecurity and AI system protection. Ultimately, the project is improving the trustworthiness of AI systems.

Objective

In today’s hyper-connected world, detecting malicious actors embedded in complex systems is a critical challenge with direct implications for cybersecurity, information integrity, and the safe deployment of AI technologies. This project will examine the problem from a mathematical perspective, focusing on random graphs with planted anomalies: small sets of nodes whose connectivity differs from that of the rest of the network. Many existing methods employ heuristics without formal guarantees of their performance, or they often overlook key aspects of real networks, such as inhomogeneity, spatial structure, or higher-order connections.

The project will develop along four specific goals:
(1) Build models of planted anomalies in networks that include realistic features;
(2) Find the thresholds between recovery achievability and impossibility;
(3) Design algorithms that guarantee planted anomalies recovery in polynomial time;
(4) Test these methods on both synthetic data and real network datasets.

My research will provide a clearer understanding of the limitations of anomaly detection and offer practical tools that others can utilize. All results will be shared, and the implementation will be collected in an open-source software. These outcomes are relevant for detecting cyber attacks, tracking disinformation, and protecting AI systems from hidden manipulation. The project supports European goals in cybersecurity, digital resilience, and trustworthy AI by developing reliable detection methods.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

UNIVERSITA DEGLI STUDI DI PADOVA
Net EU contribution
€ 193 643,28
Address
VIA 8 FEBBRAIO 2
35122 Padova
Italy
Region
Nord-Est Veneto Padova
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data