“We regret to inform you” is five words you never want to see in an email. But over the weekend thousands of people did as Epsilon began warning its customers that it had suffered a break-in and email addresses were stolen. Epsilon now says that about 50 of its client businesses were hit — no small number. The problem is that now security experts warn that a ton of spear-phishing attacks will be forthcoming. And then there might be more letters of regret, from TJX to ChoicePoint.”]

