Concept is a remarkably friendly virus, which happily infects across platforms.
Thus, people using mail interfaces which make use of the Word application can get a virus by reading electronic mail. The statement 'You cannot get a virus by reading your mail' is no longer true. Perhaps calling the techniques used by this virus a new concept is not totally accurate. We knew this type of vulnerability in a macro language would be exploited sooner or later. Apparently non-malicious in intent, Winword.