Russian hackers compiled a list of 11+ million hacked accounts from Russian Yandex, Mail.ru and American Gmail services.
Hackers published hacked Google accounts a Russian cyber security internet forum.
Google confirmed the hack and said they are still investigating.
Google Russia said they have detected hacked accounts using automatic tools to protect users and those accounts have been locked, until owners reset passwords.
Yandex and Mail.ru said that there was no server breach, hackers tricked users using other methods such as phishing. Most of the passwords are old, which confirms that hackers have compiled a list of hacked accounts from the different hacks in recent years.