No , what i am saying someone else with a gmail (GOOGLE) address was able to verify one of my domains in my webmaster account and google are not willing to do anything about this

so read threads fully before starting an argument

I wasn't trying to start an argument, and actually did read the thread fully.
I still believe something's up, though. Google wouldn't simply let an external account verify an already verified domain without access to the same web server. That just doesn't make any sense.

That I agree with, my upstream provider check my site files and the deep server logs going back to when this happened and not outside access to site and no other HTML file added to my site. Google should be at least trying to work with me to figure this out rather than just say tough contact the other person as we are not going to take action against them. I did using my Yahoo account email this other gmail account and as expected then have not replied, which if you were the scammer would you reply. ( i suspect the gmail account was set up to do this and is unchecked)

What about your domain name provider? Could it be possible that the spammer/hacker temporarily modified the DNS so it directed the domain to his/hers web server, to which he/she could easily upload the verification file?

That's a stretch, sure. However, I just cannot imagine any other way for the person to have used the HTML verification function without any kind of access to your server itself. (other than having your host lie regarding the integrity of their network, which is unlikely)

Also, what possible reason would this person have to link your domain with his account? It isn't like he can do much with your domain. (webmasters is mostly a statistical tool that enhances your appearance online)

Either way, I wish you the best of luck getting everything sorted out.

i checked all that and nothing was changed at the registrar. yes in my account it stated it was done by HTML verification but server logs etc dont show any of this, so google should be trying to help figure this out as what if their own system has been compromised, and they just tell users what they told me.

This looks bad. How could we solve this issue with the mentioned Gmail user when we don't know him.

Old thread, but true. So far that gmail user had not replied to my emails sent, which is what i expected as if anyone trying to take control of your domains is ever going to reply to you if you email them.