http://en.wikipedia.org/wiki/Wikipedia:Administrators%27_noticeboard/Inciden...
In the process of investigating a quirky article for unrelated reasons, it popped up that massive swaths of text in [[Introduction to M-theory]] were copied verbatim and near-verbatim (rearranged) from the book 'The Turn of the Century'. This happened at least twice, in this edit: http://en.wikipedia.org/w/index.php?title=Introduction_to_M-theory&diff=... And more was introduced later with the 'What does M stand for?' section. This has stood for 8 years in a massive article with plenty of attention, yet should've raised red flags all over the place (as said its a massive article, yet it has no sources cited.
How can we protect against these things?