MD Olly Thornton-Berry said that he and Jack Bidgood first came upon the idea for Thirdfort after a friend of theirs lost £25,000 while buying a flat in London due to a phishing attack: fraudsters had picked up some data about the deal, and created a domain similar to that of the legal firm the friend was using for the purchase, and with that wrote an email impersonating the friend’s lawyer, asking for the sum to be transferred via a link.