The discussions that took place on IronMarch’s message boards are believed to have led to the creation of several far-right groups in Europe, Australia, and the United States. Among them is the notorious Atomwaffen Division (pictured), an American neo-Nazi group that focuses on street-fighting and is known to train its members in the use of military-grade weapons and guerilla warfare tactics. Another group that organized and recruited heavily through IronMarch was Vanguard America, one of the organizers of the Unite the Right rally in Charlottesville, Virginia in 2017.

But the website abruptly shut down its operations in late 2017. No explanation was given. Users of far-right online forums are used to experiencing such sudden changes in hosting platforms, which are due to legal challenges, intervention by law enforcement, etc. So they did what they always do in such cases: they migrated to other far-right platforms where they continued to discuss and organize. IronMach never resurfaced, so it was eventually forgotten.

Last Wednesday, however, a user calling themselves “antifa-data” uploaded what appears to be the entire metadata and chat log archive of IronMarch on the website of the Internet Archive. The content was later removed, but not before it was downloaded by thousands of Internet Archive users, among them government agencies. The data dump reportedly includes the usernames of IronMarch members, as well as the emails associated with their individual accounts. It also contains the IP addresses of IronMarch members and even the contents of private messages that they exchanged with other members.

Some investigative websites have since reported that numerous IronMarch users were associated with email accounts belonging to American universities. Others stated in private messages that they were members of the armed forces of several countries in Europe and the Americas. At least one user appears to have run for Congress in the United States. On Friday, the American website Military Times said that United States authorities were concerned that many of IronMarch’s members said they were serving in the US Armed Forces or expressed a desire to join a military branch. A spokesman for the US Marine Corps told the Military Times that there was “no place for racial hatred or extremism in the Marine Corps”.