My site have been hacked using "Forgot your Password?" - Joomla! Forum - community, help and support

it's not serious problem me because having backup of site, i'm using latest joomla version , my site have been hacked using "forgot password?". know because i'm using statcounter , see hacker has accesed option site:



someone can tell me please, possible wrong site because hacked quickly? thanks.

my site have been replaced turkish things, , have informations hacker: