Cache access problem without authentication?
Nowhere did I see any mention of cache access authentication. I think the problem is way deeper and they are just hoping that using unique ID's will make the problem go away. This is what GDPR and CCPA are slowly but surely addressing. I doubt that if the fix is simple else Google would not have disabled integrations; bugs (and even security bugs) occur frequently and are patched all the time. There must have been something more systemic.