AWstat curious account "" besides normal account

My awstats is showing up a curieus account("") in the access column i have only one account(x) added to the .htacces file .
So normally you would expect to see just X has a logged account.
Recently i saw that there was also another account wich accessed the logs ("") .
Could this be a problem, i mean could this be a normal operting account or could this be some sort of hacker account.
Like i said i never made this account. I didn't set up awstats myself therefore i don't know if this is some sort of default operating account.
Anybody any ideas?AWstat curious account

 

 

 

 

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