Facebook announces that it will launch a new messaging platform, providing an email address of "@facebook.com."
- Facebook tells congressional investigators an operation, traced to a Russian company seeking to target voters, spent $100,000 on thousands of U.S. ads promoting divisive social and political messages during the 2016 U.S. election.
- Business leaders from various U.S. companies, including Facebook, Marriott International, JPMorgan Chase, and Microsoft, lobby to members of Congress to work on a permanent solution for DREAMers to stay legally in the country, many of whom are their employees.
- Facebook, Google, and Twitter executives have been asked to testify before the House of Representatives Intelligence Committee in October and the Senate Intelligence Committee on November 1, according to committee sources.
- Facebook agrees to disclose ads that ran in the U.S. in 2016 from accounts associated with a Russian entity known as the Internet Research Agency to United States Congressional investigators. Earlier, this information was provided to Special Counsel Robert Mueller.
- The White House releases unredacted emails of people concerned about the Presidential Advisory Commission on Election Integrity. Sensitive information revealed in the emails prompts immediate backlash and privacy concerns.