What Your Posts Reveal: A Benchmark and Agentic Framework for User-Level Privacy Leakage on Social Media
Paper • 2606.06784 • Published
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Paper: https://arxiv.org/abs/2606.06784
SopriBench is the first large-scale multimodal benchmark dedicated to evaluating privacy inference risks on social media platforms. It contains 50 user profiles and 1,569 images with fine-grained annotations of 28 personal attributes across 4 dimensions: basic information, socioeconomic status, lifestyle, and sensitive information.
The dataset is designed to facilitate research on privacy-preserving AI, adversarial privacy attacks, and multimodal representation learning. All data is synthetically generated and does not contain any real user information.
To preview the dataset structure and sample instances, we have released a public 3-user preview subset at: https://huggingface.co/datasets/Nina-Huang/SopriBench. We recommend you first review the subset to inspect the dataset structure before submitting your request.
Repository Layout
user_info/post/user_XXX_post.json: Public-facing account data, including 10 posts per user with title, caption, tags, and corresponding image IDsuser_info/profile_granularity/user_XXX.json: Ground-truth hidden user profile, with fine-grained sensitivity and granularity annotations for each attributeuser_info/selected_attributes/user_XXX_selected.json: Curated attribute subset used as the official evaluation targetfinal_img/user_XXX/: Directory of rendered post images, organized by user ID
SopriBench-full/
├── README.md
├── data/
│ └── sopribench.jsonl # Dataset Viewer index (one row per image)
├── final_img/
│ └── user_XXX/
│ └── post_YYY__img_ZZZ.jpg
└── user_info/
├── post/
│ └── user_XXX_post.json
├── profile_granularity/
│ └── user_XXX.json
└── selected_attributes/
└── user_XXX_selected.json
Access Request
This is a gated dataset. To request access to the full 50-user dataset:
- Read and accept the terms of use.
- Complete the access request form with your institutional information and research purpose.
- We will review your application within 3–5 business days.
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