Wikipedia:Beware hidehack edits

Beware hidehack edits (or Bigfooting), hack edits which hide information inside tags or template parameters. Hidehack edits are not direct vandalism because they do not affect the displayed page, but merely conceal text which can be read by other users during an edit. Hidehacking is often used to spam opinion text, again, inside of pages, where it can be read during edits. The term "Bigfooting" refers to a hack edit made in March 2012 to mention "Bigfoot" inside a noinclude tag of an unprotected template.