not by a long shot
My first today came (ostensibly) from Alan Boyle at MSNBC, followed by a flood of others, many with return addresses I recognized, probably all forged.
Interestingly, Norton AntiVirus didn't catch them until after I got the new definitions noonish today. What saved me was knowing that a PIF file is an executable, and that there's no legitimate reason to ever email one. The first line of defense is always a little computer situational awareness.