Even if you change your MyCloud name from default, bad guys can still find it by proxying through your browser. Here’s an example video. Finding local wd server from internet... - YouTube
Note, this video just shows how a bad server on the internet can find your WD My Cloud on your local network by scanning your network via your browser. It doesn’t perform the subsequent attack. This is utilizing by-design functionality in the browser so there’s nothing to patch.
TLDR: Changing your My Cloud server name to something unique won’t protect you because the attacker can just scan your network via your browser.
