We've seen a few reports, recently, about stolen blogs, in Blogger Help Forum: Something Is Broken . Why is my blog not on my dashboard - and why is somebody else publishing, and using my name? There are so many reports from people who are not using Google "One Account" login properly , that the significance of this problem report was initially overlooked. More than a few such reports started with the blog owner email address being openly disclosed - generally on the blog, or in comments. Too many blog owners want to be contacted - and they innocently provide their email addresses as a contact point. We've known, for years, about disclosed email addresses, and brute force password guessing . That is not the only way your email address can be used, to gain access to your Blogger account, however.
What Blogger won't tell you