Chapter 9: Internet Artifacts & Browser Forensics

Web browsers including Google Chrome, Mozilla Firefox, Internet Explorer, and Microsoft Edge maintain extensive records of user activity through multiple storage mechanisms that investigators can systematically extract and interpret. Browser artifacts encompass history files, cached web content, cookies, bookmarks, and stored authentication credentials, each of which reveals distinct aspects of user behavior and intent. The chapter details the specific file structures and storage locations for these artifacts across different browser platforms, such as Chrome's JSON-formatted bookmark files and SQLite database structures for historical records, Internet Explorer's WebCacheV01.dat storage architecture, and Firefox's places.sqlite database containing navigational data. Understanding how to locate, parse, and analyze these repository files enables investigators to reconstruct user timelines and identify suspicious browsing patterns. Beyond basic browser analysis, the chapter addresses how social media platforms including Facebook, Instagram, Twitter, and Snapchat generate forensic traces through browser caches, stored session data, and cloud-based repositories. These digital footprints can be recovered even after deliberate deletion by users seeking to conceal their activities. The chapter further explores peer-to-peer file sharing networks and applications such as Ares, eMule, and Shareaza, which operate on decentralized architectures and generate verifiable hash values for shared content. Investigators learn to trace file-sharing activities across distributed networks and identify evidence of data transfer and storage. Finally, the chapter analyzes cloud storage services including Dropbox, Google Drive, and OneDrive, explaining how forensic examination of synchronized files, residual cache data, and cloud service metadata can reveal patterns of file manipulation and access. The chapter integrates discussion of specialized forensic tools for cache analysis and addresses the legal and procedural considerations surrounding evidence collection from internet service providers and cloud computing platforms.