My boss accidentally bcc’ed me on a private email — he has no idea I saw it
This morning, I received an email from my boss about a new hire. He's been interviewing candidates for the past few weeks, so I assumed it was an update about his decision. Instead, it was a private email for his boss with specific comments on candidates he'd interviewed! I definitely wasn't supposed to see this and I have no idea how I got bcc'ed — but the wrong, private email landed in my inbox regardless.
My boss hasn't said anything, and I'm not sure if I should bring this up. If I don't, what if he realizes his mistake in the future and confronts me about it?