My Google account was suspended because of 'suspicious activities'. Last month, I realized that my two connected blogs, to that account, were also put offline!
Somebody else was unable to use the supplied account / blog recovery tools - and tried guessing what could not be remembered.
The first would be a blog owner, whose only mistake was having a Blogger account with a name similar to another account, owned by the second.
The second would be someone who could not remember her (his) account name / password, could not use account or password recovery, and who got well meaning advice.
Just do the best you can - try what may be your account name, and any passwords that you can remember!
One blog owner must suffer, because another cannot remember login details.
And owner #1 is suffering, because of owner #2. Owner #1 is now anxiously waiting for action by the security experts (with the blind queue of unknown length) to examine his blogs - and possibly, waiting while not knowing why.
Owner #1 may be seeing this - and not know why.
Password guessing may be necessary, in extreme cases - but it can cause misery - and owner #2 will never realise the pain caused to owner #1. Even if owner #2 recovers access to her / his blogs, innocent brute force attempts can cause account lock / blog security lock, to owner #1.
Protect yourself against the anguish, using Google 2-Step Verification.
The best way to protect against this sort of abuse is to use one or more Google Two Step Verification options. This will leave owner #2 seeing (for instance).
Insert your USB security key, and tap the lighted button.
And having no security key, owner #2 will simply have to try guessing a different account name. It may be an inconvenience (for owner #1), carrying a never used USB security key - but the one time it's needed (and available), it will make up for the inconvenience.
One #Blogger blog owner, unable to remember a necessary account name or password, may try guessing what cannot be remembered. Guessing an account name can leave one trying an account that somebody else owns - and can cause account lock and blog deletion for somebody who they will never know.