Target=”_blank” — the most underestimated vulnerability ever

Alex Yumashev
May 4, 2016 · 1 min read
window.opener.location = ‘https://fakewebsite/facebook.com/PHISHING-PAGE.html';

How to fix

rel="noopener"
rel="noopener noreferrer"
var newWnd = window.open();
newWnd.opener = null;

Alex Yumashev

Written by

Founder of https://www.jitbit.com. Hacker, father, snowboarder, bass-player.

Welcome to a place where words matter. On Medium, smart voices and original ideas take center stage - with no ads in sight. Watch
Follow all the topics you care about, and we’ll deliver the best stories for you to your homepage and inbox. Explore
Get unlimited access to the best stories on Medium — and support writers while you’re at it. Just $5/month. Upgrade