Hello, on my cloud box, twice this month all my files have been deleted. The directory structure is intact but the files have all been sent into the trash. I'd like to make it clear that I only accessed the cloud box marginally and in no way can the cause be due to any action on my part, especially when all the files in all the directories are deleted at once. 

 What's the problem? How can I avoid this inconvenience making this cloud unsecure. 

Thank you very much.