No
Think about it
You need to download this topic page to see it. Right?
So how can they see your work if you won't let the download it?
DRM is what you want, but YOU can't afford to DIY. You need a BPH or large distributor like Amazon that adds it a author $ervice.
Note This (DRM) is mostly the first thing Calibre users defeat so they can reformat the work
their way.
You want security like you state, then put the manuscript in your safe and spin the dials, keeping FAR, FAR, away from the internet