activity
20222026
most citedEnhanced Security and Privacy via Fragmented Federated Learning

48 citations · 108 across the 10 of their papers we have counts for

collaborators

11 papers

cs.CR2026

A Critical Review on the Effectiveness and Privacy Threats of Membership Inference Attacks

Najeeb Jebreel, David Sánchez, Josep Domingo-Ferrer

Membership inference attacks (MIAs) aim to determine whether a data sample was included in a machine learning (ML) model's training set and have become the de facto standard for me…

cs.CR2026

Revisiting the LiRA Membership Inference Attack Under Realistic Assumptions

Najeeb Jebreel, Mona Khalil, David Sánchez +1

Membership inference attacks (MIAs) have become the standard tool for evaluating privacy leakage in machine learning (ML). Among them, the Likelihood-Ratio Attack (LiRA) is widely…

cs.CR2025

Membership Inference Attacks Beyond Overfitting

Mona Khalil, Alberto Blanco-Justicia, Najeeb Jebreel +1

Membership inference attacks (MIAs) against machine learning (ML) models aim to determine whether a given data point was part of the model training data. These attacks may pose sig…

cs.CR2025

Efficient Unlearning with Privacy Guarantees

Josep Domingo-Ferrer, Najeeb Jebreel, David Sánchez

Privacy protection laws, such as the GDPR, grant individuals the right to request the forgetting of their personal data not only from databases but also from machine learning (ML)…

cs.LG2025★ 2 cited

DP2Unlearning: An Efficient and Guaranteed Unlearning Framework for LLMs

Tamim Al Mahmud, Najeeb Jebreel, Josep Domingo-Ferrer +1

Large language models (LLMs) have recently revolutionized language processing tasks but have also brought ethical and legal issues. LLMs have a tendency to memorize potentially pri…

cs.CR2024★ 28 cited

Digital Forgetting in Large Language Models: A Survey of Unlearning Methods

Alberto Blanco-Justicia, Najeeb Jebreel, Benet Manzanares +4

The objective of digital forgetting is, given a model with undesirable knowledge or behavior, obtain a new model where the detected issues are no longer present. The motivations fo…

cs.CR2023

An Examination of the Alleged Privacy Threats of Confidence-Ranked Reconstruction of Census Microdata

David Sánchez, Najeeb Jebreel, Krishnamurty Muralidhar +2

The threat of reconstruction attacks has led the U.S. Census Bureau (USCB) to replace in the Decennial Census 2020 the traditional statistical disclosure limitation based on rank s…

cs.CR2023★ 1 cited

Defending Against Backdoor Attacks by Layer-wise Feature Analysis

Najeeb Moharram Jebreel, Josep Domingo-Ferrer, Yiming Li

Training deep neural networks (DNNs) usually requires massive training data and computational resources. Users who cannot afford this may prefer to outsource training to a third pa…

cs.CR2022★ 25 cited

Defending against the Label-flipping Attack in Federated Learning

Najeeb Moharram Jebreel, Josep Domingo-Ferrer, David Sánchez +1

Federated learning (FL) provides autonomy and privacy by design to participating peers, who cooperatively build a machine learning (ML) model while keeping their private data in th…

cs.LG2022★ 4 cited

FL-Defender: Combating Targeted Attacks in Federated Learning

Najeeb Jebreel, Josep Domingo-Ferrer

Federated learning (FL) enables learning a global machine learning model from local data distributed among a set of participating workers. This makes it possible i) to train more a…

cs.CR2022★ 48 cited

Enhanced Security and Privacy via Fragmented Federated Learning

Najeeb Moharram Jebreel, Josep Domingo-Ferrer, Alberto Blanco-Justicia +1

In federated learning (FL), a set of participants share updates computed on their local data with an aggregator server that combines updates into a global model. However, reconcili…