March 11, 2026, CAMBRIDGE – The Applied Social Media Lab (ASML) at Harvard University’s Berkman Klein Center for Internet & Society is pleased to announce the release of Transparency Hub, a user-friendly tool that aggregates policy documents and associated data of technology and social media companies allowing both researchers and users to search, compare, and analyze how policies have changed over time. With a collection of over 20,000 terms of service, privacy policy, and community guideline documents from over 300 companies, the Transparency Hub system facilitates easier research and engagement with public-facing policy documents, offering greater accessibility and insight into how these companies use data.
“Changes to privacy policies usually arrive as a pop-up or an email — notifications that research shows most people never read,” said ASML Senior Director Meg Marco. “Transparency Hub collects and archives policy documents in one place, making it easier for researchers, journalists, and platform users to understand and compare the changes that affect them — and millions of other people.”
Transparency Hub consists of a user-facing website that, behind the scenes, uses automated mechanisms to detect and download updated policy documents from existing companies. The system offers features for users to search past and current documents from a single platform in order to identify how policies have evolved over time, and to compare documents across different platforms. Additionally, Transparency Hub uses AI to conduct automated data quality checks of new document captures to ensure that information is accurate and up to date.
Gordon McKay Professor of Computer Science and ASML Faculty Co-Director James Mickens, who spearheads the project, echoed Marco’s statement on the lack of accessibility of company policies, and how that can impact users — particularly technology researchers. “I think Transparency Hub is an important tool for independent oversight of how online services claim to respect (or not respect) users and their private information.”
BKC Executive Director Alex Pascal also hailed the platform as a step in the right direction toward user agency online. “Transparency Hub will help empower social media users and bring greater accountability for big tech platforms that wield tremendous power over our personal information. The Applied Social Media Lab’s products make (intentionally) complex and obscure information more accessible and comprehensible to the public — giving people more agency over the tech they use. This is exactly the kind of real world impact BKC strives for in our work, especially as AI becomes increasingly prevalent in our lives.”
Learn more about Transparency Hub through a story illustrating the real-life impact this tool could have for users and researchers alike.
For press inquiries, please contact BKC’s Director of Communications and Engagement, Isabella Roden, at iroden@cyber.harvard.edu.
The Berkman Klein Center’s Applied Social Media Lab is supported by a generous gift from Frank H. McCourt, Jr. and the 501(c)(3) non-profit Project Liberty Institute.