Internal Microsoft strategy memoranda leaked in autumn 1998 — later known as the Halloween Documents — described Open Source Software and Linux as serious competitive threats and discussed tactics for neutralising them, including protocol pollution. The first document, authored by engineer Vinod Valloppillil and dated 1 August 1998, was leaked to open-source advocate Eric S. Raymond, who published annotated versions publicly. A second document followed. The memos gave currency to the phrase "embrace, extend, extinguish" (EEE), attributed to a Microsoft VP Paul Maritz internal email. The documents' authenticity was confirmed by Microsoft. They featured in EU antitrust proceedings and in Comes v. Microsoft (Iowa, 2007).