{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T17:20:58Z","timestamp":1782408058510,"version":"3.54.5"},"reference-count":88,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2025,8,12]],"date-time":"2025-08-12T00:00:00Z","timestamp":1754956800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61601275"],"award-info":[{"award-number":["61601275"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["SJCX24_0385"],"award-info":[{"award-number":["SJCX24_0385"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Jiangsu Graduate Research and Practice Innovation Program","award":["61601275"],"award-info":[{"award-number":["61601275"]}]},{"name":"Jiangsu Graduate Research and Practice Innovation Program","award":["SJCX24_0385"],"award-info":[{"award-number":["SJCX24_0385"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Information"],"abstract":"<jats:p>Network trace is a comprehensive record of data packets traversing a computer network, serving as a critical resource for analyzing network behavior. However, in practice, the limited availability of high-quality network traces, coupled with the presence of sensitive information such as IP addresses and MAC addresses, poses significant challenges to advancing network trace analysis. To address these issues, this paper focuses on network trace synthesis in two practical scenarios: (1) data expansion, where users create synthetic traces internally to diversify and enhance existing network trace utility; (2) data release, where synthesized network traces are shared externally. Inspired by the powerful generative capabilities of latent diffusion models (LDMs), this paper introduces NetSynDM, which leverages LDM to address the challenges of network trace synthesis in data expansion scenarios. To address the challenges in the data release scenario, we integrate differential privacy (DP) mechanisms into NetSynDM, introducing DPNetSynDM, which leverages DP Stochastic Gradient Descent (DP-SGD) to update NetSynDM, incorporating privacy-preserving noise throughout the training process. Experiments on five widely used network trace datasets show that our methods outperform prior works. NetSynDM achieves an average 166.1% better performance in fidelity compared to baselines. DPNetSynDM strikes an improved balance between privacy and fidelity, surpassing previous state-of-the-art network trace synthesis method fidelity scores of 18.4% on UGR16 while reducing privacy risk scores by approximately 9.79%.<\/jats:p>","DOI":"10.3390\/info16080686","type":"journal-article","created":{"date-parts":[[2025,8,12]],"date-time":"2025-08-12T16:30:36Z","timestamp":1755016236000},"page":"686","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Enhancing Privacy-Preserving Network Trace Synthesis Through Latent Diffusion Models"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-1664-4435","authenticated-orcid":false,"given":"Jin-Xi","family":"Yu","sequence":"first","affiliation":[{"name":"College of Information Science and Technology & College of Artificial Intelligence, Nanjing Forestry University, Nanjing 210037, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi-Han","family":"Xu","sequence":"additional","affiliation":[{"name":"College of Information Science and Technology & College of Artificial Intelligence, Nanjing Forestry University, Nanjing 210037, China"},{"name":"School of Computer Science and Technology, Qinghai University, Xining 810000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6040-5339","authenticated-orcid":false,"given":"Min","family":"Hua","sequence":"additional","affiliation":[{"name":"College of Information Science and Technology & College of Artificial Intelligence, Nanjing Forestry University, Nanjing 210037, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6413-4882","authenticated-orcid":false,"given":"Gang","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield S10 2TN, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4831-3375","authenticated-orcid":false,"given":"Wen","family":"Zhou","sequence":"additional","affiliation":[{"name":"College of Low Altitude Equipment and Intelligent Control, Guangzhou Maritime University, Guangzhou 510725, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Jiang, X., Liu, S., Gember-Jacobson, A., Schmitt, P., Bronzino, F., and Feamster, N. 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