Yes, the outage detail page mentions auth issues in its current summary: <a href="https:&#x2F;&#x2F;status.cloud.google.com&#x2F;incident&#x2F;appengine&#x2F;15025" rel="nofollow">https:&#x2F;&#x2F;status.cloud.google.com&#x2F;incident&#x2F;appengine&#x2F;15025</a>