I have read through and I am enlightened on Bitshare exchange.*

The Key-File can be just as secure as an individual account depending on the strength of the encryption password used. The local file is also secured by the fact that it is not a public file on the internet and only the user should ideally have access to it.

Its' decentralized and that makes it safe 
 to invest.
 Keep on with the hard work.🙏