How was that not expected? Give people somewhere to stick files that they don’t want to lose because of a hard drive crash or computer malfunction. Files that they absolutely want backed up somewhere not locally. Files that they may want to get access to while not at home… All those are going to be things like taxes, receipts, medical forms and data, scans of important documents, etc. like, that’s the point.
The article is specifically about Business Workspace accounts. The concerning part was that then about 1/3 of the sensitive files were externally shared.
To be honest, the article reads like blogspam for an up-and-coming cyber security newsletter. The “report” is just marketing for a data governance software company.
People putting sensitive documents on their personal Google drive isn’t much of a risk if they follow best security practices securing their Google account.
Like I said it’s a marketing paper for a data governance software company. The numbers are to sell their product to corps that don’t know what their users are sharing, not that there isn’t a reason to share certain data externally.