The research done in this study has delved deeply into the changes made to digital images that are uploaded to three of the major social media platforms and image storage services in today's society: Facebook, Flickr, and Google Photos. In addition to providing up-to-date data on an ever-changing landscape of different social media networks' digital fingerprints, a deep analysis of the social networks' filename conventions has resulted in two new approaches in (i) estimating the true upload date of Flickr photos, regardless of whether the dates have been changed by the user or not, and regardless of whether the image is available to the public or has been deleted from the platform; (ii) revealing the photo ID of a photo uploaded to Facebook based solely on the file name of the photo.

翻译：本研究深入分析了当今社会中三大主流社交媒体平台及图像存储服务（Facebook、Flickr 和 Google Photos）对上传数字图像所做的修改。除提供不同社交网络数字指纹这一不断变化的最新数据外，本文对社交网络文件名规范的深入分析还提出了两种新方法：（i）估算 Flickr 照片的真实上传日期，该方法不受用户是否更改日期、图像是否对公众可见或已从平台删除的影响；（ii）仅依据照片文件名即可揭示上传至 Facebook 的照片 ID。