No Opener, No Phishers is a user-friendly Chrome extension enabling secure browsing. It adds 'noopener noreferrer' to the rel attribute on all links from the websites you visit. This prevents phishing attacks exploiting the target='_blank' vulnerability that exists in several websites with user generated content, thereby enhancing your browser's security. Explore the open-source extension on Github.
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Any website that uses target="_blank" on their links, allows user generated content and doesn't use the rel="noopener" attribute on their links (I'm looking at you Facebook, Twitter etc.) is vulnerable to a scarily simple phishing attack.
This Chrome extension is as simple as it gets, all it does is add "noopener noreferrer" to the rel attribute on all links on the pages that you're visiting so that you won't fall victim to this type of phishing attack.
PSA: This is no longer required if you're on version 88 or newer on any platform that uses Chromium (e.g. Chrome, New Edge, Brave, etc.). https://www.chromestatus.com/feature/6140064063029248
This feature is now baked into Chrome so the extension can be removed for most purposes.
Where a site links to a target other than "_blank", e.g. "_potato" the same security issue still exists. Not sure if this extension only works with _blank links