Occasionally, you may get an intriguing bit of email from Blogger Support.
This email is a response to your request for information about the Blogger account with the username xxxxxxx.
This account has been associated with the Google Account [email address]. You must use this email address to log in to Blogger from now on.
If you have forgotten the password to this Google Account, visit the following URL to reset it.
This account is a member of the following blogs:
Here you should see a list of your blogs.
If you experience any problems or have further questions, please visit our help site at http://help.blogger.com/
The Blogger Team
This is a little scary, because you know what your account, and you password is, so why would you have requested this information? Is Blogger Support harassing you?
Cue spooky music.
Or worse yet, is somebody trying to break into your account? OMG, I'm being hacked.
Cue scary music.
But no, reality is a bit less interesting. Blogger Support has repeatedly said that they will keep your Blogger account for you, forever, and that they will never disclose your account information to anybody.
That being the case, what happens if, one day, you forget your account information? Hoping that you still have the email account that you used, when you registered your account, you use the Google Account Recovery tool, plug in what you think is your account name (email address), and Blogger will helpfully send an email to the address associated with the account.
If the account is yours, and the email address is yours, you'll get the email. If the account isn't yours, somebody else gets the email.
If you just got the email, and you didn't request the information, then it's likely that somebody else was trying to guess their account name, and entered your account name instead. Since you got the email, the other person didn't, and you and your account are still secret to you. You are safe, your account is safe, the other person didn't get any information about you.
Discard the email, and get back to work. Stop the music.