OSIRT iii

OSIRT iii - Investigations Professionalised & Simplified.

Capture, record and preserve online evidence directly into your OSIRT iii Digital Casebook. The OSIRT iii Browser Extension works seamlessly with the OSIRT iii Digital Casebook, enabling investigators to capture, document and preserve online evidence during online investigations. New users can start a free 30-day trial of the OSIRT iii Digital Casebook at: https://osirt.co.uk/try The OSIRT iii Browser Extension works seamlessly with the OSIRT iii Digital Casebook (available at https://osirt.co.uk), enabling investigators to capture, document and preserve online evidence quickly and reliably during web-based investigations. OSIRT iii automatically logs the URLs you visit into your Digital Casebook, creating a clear investigative timeline. When you identify relevant content, capturing evidence is as simple as clicking a button in the extension. Only capture what you need, while keeping your investigations organised and structured. The extension has been designed specifically for online investigations, OSINT work, and digital evidence collection, helping professionals capture web content in multiple formats while maintaining evidential integrity. WEB EVIDENCE CAPTURE Capture web content in a range of formats depending on your investigative needs. • Full-page screenshots Capture an entire webpage regardless of its length. • Scroll and stitch capture Automatically scroll a webpage and stitch multiple screenshots together into a single full-page capture. • Scroll element and stitch Capture long elements such as comment sections, feeds, or embedded containers that scroll independently within the page. • Region / area selection Select and capture a specific part of a webpage. • Current view capture Instantly capture the visible portion of the page. • Delayed screenshots Add a delay before capturing to record hover menus, tooltips, pop-ups or timed content. • Tab video recording Record activity in the current browser tab as video, allowing investigators to document dynamic behaviour such as scrolling content, live feeds or interactions. These tools allow investigators to capture both static and dynamic web evidence. PAGE EXTRACTION TOOLS Extract structured information directly from webpages for further analysis. • Page source capture Save the complete HTML source code of a webpage. • MHTML page preservation Capture the full page as a self-contained MHTML archive, preserving layout and embedded content. • Extract all links Collect every link present on the page. • Extract all readable text Capture the visible text content of a webpage while removing layout clutter. All extracted content is automatically transferred to your OSIRT iii Digital Casebook. PAGE ALERTS The Page Alerts feature allows investigators to monitor webpages for specific keywords or tags. • Monitor up to 10 custom tags at once • Scan both visible page text and the underlying source code • Automatically highlight matches on the page • Trigger automatic evidence capture when matches are detected • Optional alert notifications and sounds This feature is useful when investigating marketplaces, forums, listings, or other pages where specific items or terms may appear. INVESTIGATION TOOLS The extension also includes several tools designed to support investigative workflows. • Website tree viewer Automatically generate a visual map of a website’s structure, helping investigators understand how pages connect within a site. • Auto-scroll page Automatically scroll a webpage at adjustable intervals, useful for monitoring dynamic content such as social media feeds or marketplaces. • Save all open tab URLs Quickly capture the URLs of all open tabs and send them to your Digital Casebook. • Access the Dark Web via Tor When used alongside the OSIRT iii Digital Casebook, the extension can route browsing through Tor for access to .onion services. EVIDENCE INTEGRITY Every capture made using the OSIRT iii Browser Extension is automatically: • Logged in the OSIRT iii Digital Casebook • Cryptographically hashed to create a unique fingerprint • Date and time stamped • Linked to the original source URL These measures help ensure that captured material maintains traceability, authenticity and evidential value. DESIGNED FOR PROFESSIONAL INVESTIGATORS OSIRT iii is designed for professionals who conduct online investigations, including: • OSINT investigators • Corporate investigation teams • Law enforcement professionals • Intelligence analysts • Compliance and fraud investigation teams By combining powerful capture tools with the OSIRT iii Digital Casebook, investigators can collect and organise online evidence efficiently while maintaining a structured investigative record.