#9: Sigurdur Thordarson and the WikiLeaks Betrayal (2010–2011)
Sigurdur Thordarson, known as Siggi, joined WikiLeaks as a teenager in 2010. He gained trust and access to internal communications. After conflicts with the group, he turned to U.S. authorities and shared documents, chats, and personal data. His actions became part of wider efforts to investigate WikiLeaks and Julian Assange.

