They happened to send a fake error report email (which had all of the "red flags" you should catch before clicking a link in an email) on the day I started an oncall rotation that had me receive similar emails. I was wary of missing one, so when I saw it coming, :click:.

I was greeted with a nice message to educate me about what I had just done and how to avoid it. I knew all of this of course (Ive worked in security!), but it just shows how no one is foolproof.