How do I change my password for apple IMAP?

Your Apple ID password? If you forgot your password.

Enter the Apple (iCloud) ID and click Forgot Password.

Apple ID - Manage

Apple ID – Forgot Password

If you want to change your existing password.

 Apple ID Password Change

 What to do after you change your Apple ID or password - Apple Support     I suggest doing this before you change your Apple ID or password.

I don't recognize the username and password in my IMAP. Have

I been hacked?

Link to contact Apple Support in the article.

Apple ID has been compromised