A phishing email propagated via Gmail was noticed yesterday. This phishing attack targets Google Documents. Around one million users may have been affected with this phishing scam.
This email was sent via Google's gmail service. The perpetrators were impersonating Google Docs. Their gmail accounts have since been disabled.
Also, fake Google pages were removed. You can use Google's security checkup if you think you have been affected. This utility will show you applications that you have connected with your Google account.
You can disable any applications that look suspicious. Google Incorporated claims that they are working on securing their systems so that this does not happen again.