The Labs published recently a new research on millions of sensitive files that by mistake were stored in public Azure Blobs.
More details here:
https://www.cyberark.com/resources/threat-research-blog/hunting-azure-blobs-exposes-millions-of-sensitive-files
We also developed and published a special open source tool for helping organizations discover their Azure Blobs and protect their data there - the tool is call “BlobHunter”, check it out:
https://github.com/cyberark/BlobHunter
For any question\feedback, feel free to contact me - Asaf Hecht, @Hechtov