Thanks for the response. Yes I had seen some prior similar responses, but I still think some help for users to understand the risks could usefully be included in the Help - rather than leaving the information buried in a long thread like this.
Have any of the YouTube channels covering Obsidian made any videos related to security that might help me investigate further?
I do understand there are technical limitations, and that Obsidian has chosen a certain development path, but as you know online fraud, malware and data theft is a very real issue of concern to many people.