activity
20192026
most citedSource Camera Verification from Strongly Stabilized Videos

29 citations · 75 across the 15 of their papers we have counts for

collaborators

17 papers

cs.CY2026

Beyond Cultural Knowledge: Evaluating Arabic Cultural Appropriateness of Large Language Models

Enes Altinisik, Hamdy Mubarak, Masoomali Fatehkia +1

Large language models (LLMs) increasingly serve users whose expectations are shaped by their cultural context, yet most cultural evaluations test what a model knows rather than how…

cs.CL2026

Fanar 2.0: Arabic Generative AI Stack

FANAR TEAM, Ummar Abbas, Mohammad Shahmeer Ahmad +34

We present Fanar 2.0, the second generation of Qatar's Arabic-centric Generative AI platform. Sovereignty is a first-class design principle: every component, from data pipelines to…

cs.AI2026

Do I Really Know? Learning Factual Self-Verification for Hallucination Reduction

Enes Altinisik, Masoomali Fatehkia, Fatih Deniz +4

Factual hallucination remains a central challenge for large language models (LLMs). Existing mitigation approaches primarily rely on either external post-hoc verification or mappin…

cs.CL2025

FanarGuard: A Culturally-Aware Moderation Filter for Arabic Language Models

Masoomali Fatehkia, Enes Altinisik, Husrev Taha Sencar

Content moderation filters are a critical safeguard against alignment failures in language models. Yet most existing filters focus narrowly on general safety and overlook cultural…

cs.CL2025

Tool Calling for Arabic LLMs: Data Strategies and Instruction Tuning

Asim Ersoy, Enes Altinisik, Husrev Taha Sencar +1

Tool calling is a critical capability that allows Large Language Models (LLMs) to interact with external systems, significantly expanding their utility. However, research and resou…

cs.CL2025

PAM: Training Policy-Aligned Moderation Filters at Scale

Masoomali Fatehkia, Enes Altinisik, Mohamed Osman +1

Large language models (LLMs) remain vulnerable to misalignment and jailbreaks, making external safeguards like moderation filters essential, yet existing filters often focus narrow…

cs.CL2025★ 5 cited

Fanar: An Arabic-Centric Multimodal Generative AI Platform

Fanar Team, Ummar Abbas, Mohammad Shahmeer Ahmad +39

We present Fanar, a platform for Arabic-centric multimodal generative AI systems, that supports language, speech and image generation tasks. At the heart of Fanar are Fanar Star an…

cs.LG2024

Explaining the role of Intrinsic Dimensionality in Adversarial Training

Enes Altinisik, Safa Messaoud, Husrev Taha Sencar +2

Adversarial Training (AT) impacts different architectures in distinct ways: vision models gain robustness but face reduced generalization, encoder-based models exhibit limited robu…

cs.CR2023★ 1 cited

ProvG-Searcher: A Graph Representation Learning Approach for Efficient Provenance Graph Search

Enes Altinisik, Fatih Deniz, Husrev Taha Sencar

We present ProvG-Searcher, a novel approach for detecting known APT behaviors within system security logs. Our approach leverages provenance graphs, a comprehensive graph represent…

cs.LG2022

A3T: Accuracy Aware Adversarial Training

Enes Altinisik, Safa Messaoud, Husrev Taha Sencar +1

Adversarial training has been empirically shown to be more prone to overfitting than standard training. The exact underlying reasons still need to be fully understood. In this pape…

cs.CL2022★ 1 cited

Impact of Adversarial Training on Robustness and Generalizability of Language Models

Enes Altinisik, Hassan Sajjad, Husrev Taha Sencar +2

Adversarial training is widely acknowledged as the most effective defense against adversarial attacks. However, it is also well established that achieving both robustness and gener…

cs.CR2022

Exploration of Enterprise Server Data to Assess Ease of Modeling System Behavior

Enes Altinisik, Husrev Taha Sencar, Mohamed Nabeel +2

Enterprise networks are one of the major targets for cyber attacks due to the vast amount of sensitive and valuable data they contain. A common approach to detecting attacks in the…

cs.CR2022★ 14 cited

Video Source Characterization Using Encoding and Encapsulation Characteristics

Enes Altinisik, Husrev Taha Sencar, Diram Tabaa

We introduce a new method for camera-model identification. Our approach combines two independent aspects of video file generation corresponding to video coding and media data encap…

cs.MM2021★ 5 cited

Automatic Generation of H.264 Parameter Sets to Recover Video File Fragments

Enes Altinisik, Hüsrev Taha Sencar

We address the problem of decoding video file fragments when the necessary encoding parameters are missing. With this objective, we propose a method that automatically generates H.…

eess.IV2020★ 1 cited

PRNU Estimation from Encoded Videos Using Block-Based Weighting

Enes Altinisik, Kasim Tasdemir, Husrev Taha Sencar

Estimating the photo-response non-uniformity (PRNU) of an imaging sensor from videos is a challenging task due to complications created by several processing steps in the camera im…

eess.IV2019★ 29 cited

Source Camera Verification from Strongly Stabilized Videos

Enes Altinisik, Husrev Taha Sencar

Image stabilization performed during imaging and/or post-processing poses one of the most significant challenges to photo-response non-uniformity based source camera attribution fr…

eess.IV2019★ 19 cited

Mitigation of H.264 and H.265 Video Compression for Reliable PRNU Estimation

Enes Altınışık, Kasım Taşdemir, Hüsrev Taha Sencar

The photo-response non-uniformity (PRNU) is a distinctive image sensor characteristic, and an imaging device inadvertently introduces its sensor's PRNU into all media it captures.…