Author

Sarim Hashmi

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Preprint Oct 2026

Certification of Real Images through Calibrated Content Authentication

Generative models can synthesize high-quality inauthentic multimedia content that is already being misused at scale. We evaluate twenty deepfake detectors against ten generators released in the last four years and find accuracy decreasing over time, from near-perfect 99.5% to 76%. Adversarial perturbations further redu...

Sarim Hashmi, Abdelrahman W. A. Elsayed, Mohammed Talha Alam et al. · 0 citations

#natural language process... Preprint Oct 2026

Noise Out, Bias In: Targeted Bias Injection in Diffusion Language Models via Closed-Loop Activation Steering

Masked diffusion language models (dLLMs) generate text by iteratively denoising masked positions, re-predicting each token multiple times before it is committed. An autoregressive decoder exposes an answer's distribution once, at the step that commits it; a dLLM exposes it at every denoising step before commitment, and...

Sarim Hashmi, Mukul Ranjan, Abdelrahman W. A. Elsayed et al. · 0 citations