On April 29, 2015 Google has launched a security extension Password Alert for its browser chrome to protect you against phishing attack.
How does it work?
If you enter your Gmail or Google password into anywhere other than accounts.google.com, you’ll receive an alert, so you can change your password if needed.
Password Alert also tries to detect fake Google sign-in pages to alert you before you’ve typed in your password. To do so, Password Alert checks the HTML of each page you visit to see if it’s impersonating a Google sign-in page.
Password Alert does not protect passwords for non-Google services.