If you would like to complete a hostile takeover of a corporation (any corporation), all you have to do is secure a majority (i.e., 51%) of the said corporation's publicly traded stocks.
Watch out, Disney, here we come.
To learn more about the sordid details of hostile takeovers and corporate espionage, check out this quick definition posted by the The Toronto Star.
For a real-life account of a hostile corporate takeover, check out this article.
Oh, and just for the record, we are not referring to the cocktail of the same name!