Yahoo!7 uses temporary, automatic account locking as a security measure to protect accounts from unauthorized access. If you (or someone else) use the wrong password three or more times when attempting to sign in to yourYahoo!7 Account

There are a couple of different reasons why our system may continue to think your account has been compromised : If our security system believes that your password is inse...

  I Think Someone Has Locked Me out of My Account

What to do if your account has been temporarily locked .

If you haven't accessed your account in some time. Your account may have been compromised. There were at least three failed login attempts...

As an added security precaution, your account will be temporarily locked from access from new locations if multiple failed login attempts ...

If you believe someone else has accessed your Yahoo!7 account, watch this video to understand the steps you should take to secure your account again. I Think Someone Has LockedYahoo!7 Account

Be assured that this email did come from our Yahoo!7 Account team, as they are educating all of our users about the benefits of this feature. By adding a mobile number to your accountYahoo!7 Account

These steps are also helpful if you have forgotten, lost or can't remember your password Too many failed login attempts may result in the account lockingYahoo!7 Account