Samples of the email being sent by criminals, disguised as American Express "official email." This is the notice provided by American Express to warn their customers that this is NOT COMING FROM AmEx, and that they are attempting to get it stopped.
If you care to browse the TrendMicro site where this is posted, you are quite likely to find that nearly every company on your list, or with a name likely to be highly recognizable by persons who might receive the phony emails are being victimized similarly.
Note: AmEx was chosen more or less at random, although this particular phony has been publicised by American Express recently.
If a mugger runs around saying his name is "Bert," does that make you guilty?