Editorial note: As of May 8, 2025, this release note has been edited to no longer specify "newly created" sandbox sites - as this change now applies to all sandbox sites regardless of when the site was created.
Beginning May 6, 2025, sandbox sites will show an interstitial page when a visitor loads a page for the first time.
After clicking through this page, a cookie is set in the browser to prevent the interstitial page from showing again for the same visitor to the same environment for 24 hours.
This change is being made to discourage abuse of the sandbox sites for spam, phishing or other malicious purposes. It also clarifies for visitors that the site is not live, preventing potential confusion.
See related documentation to learn more about this change, including how to bypass the interstitial page for automated testing.
For questions or concerns, please reach out to Pantheon Support.