What Is Target Blank Anchor Tag Phishing Attack? How To Prevent It? What Is Target Blank Anchor Tag Phishing Attack? How To Prevent It? Last September, Instagram fixed a big issue which is taken for granted by most of the frontend developers around the world. It’s the issue of putting a link with target=”_blank” attribute in an anchor tag to make it open in a new tab. There is a problem in how the browser behaves if one uses this for opening the link in a new tab. 1 <a href = "//ThaHacker.in" target = "_blank" > The Hacker </a> It is because, when one clicks the link like this, the new tab that gets open has a 1 window . opener which points to the HTML document of the page from which the link was clicked. This means that once the user clicks the link, the new malicious page has full control over previous page’s document’s full window object! 1 window . opener . location is accessible across origins ! The attacker can leverage ...