Based on the provided search results, the query appears to be broken or empty, but it seems to be referencing the rel=“noopener” attribute in HTML, which acts as a secure contingency method when using target=“_blank” for links.
Security Risk: When a link uses to open a new tab, the new page can gain access to the original page’s window.opener object. This allows the new page to maliciously redirect the original page to a different URL (a type of attack known as tabnabbing).
The Contingency/Safety Measure: Adding rel=“noopener” (or rel=“noreferrer”) to the anchor tag prevents the new tab from accessing the original window object.
Function: It separates the browsing context, ensuring that even if the new page is malicious, it cannot affect the originating site.
Modern Context: While many modern browsers have begun implementing protections automatically, using rel=“noopener” remains a recommended best practice for secure development.
If you were referring to a different type of contingency (such as a Cold Site in NIST 800-12), please let me know, and I can provide more details. g., WordPress or raw HTML)? Other types of web security best practices? The difference between noopener and noreferrer? HTML Anchor Tag | The target _blank and noopener relation
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