I normally tell people to avoid ecards like the plague. Once upon a time, they were fun and cute. Now, they are too often loaded with phishes and viruses. Very few ecard announcements are legitimate anymore.
That said, here is a Fathers Day ecard from the Federal Trade Commission on phishing and other information security tips. This is a great card. (And, yes, I will certify that it's legitimate. The music's a little hokey, though so you might want to turn down the volume before you play it.)
Take a few minutes to check it out and maybe forward the link on to someone who taught you how to stay safe.