On May 2nd, the Object Storage service within the Singapore Datacenter experienced unforeseen issues during a routine upgrade. A bug within the software backing the Object Storage Service was discovered and mitigated.

The previous version of the software backing the Object Storage Service did not fully validate bucket policies. After the upgrade, some customers with invalid bucket policies lost the ability to access their affected buckets. We have taken steps to validate bucket policies and restore access. If you suspect that your bucket is still affected, please open a ticket with our support team for review.

As a result of the lessons learned during this incident we have implemented several new tests and audits to detect invalid configurations in future upgrades across our platform.