Advanced Tabnabbing -Phishing Attack simplified

What is Tabnabbing ? Tabnabbing is Phishing attack that simplifies the phishing.The attack's name was coined in early 2010 by Aza Raskin, a security researcher and design expert.  This will reload the inactive tabs with fake page .
How The Attack Works ?
A user navigates to your normal looking site.
A malicious code detect when the page has lost its focus and hasn’t been interacted with for a