Hi, I’m on macOS Catalina 10.15 and my Etcher has stopped working after I upgraded to the latest version available for download - balenaEtcher-1.5.59.
Once installed and fired up I get this message (below) cheers.
Just to add, using
sudo /Applications/balenaEtcher.app/Contents/MacOS/balenaEtcher
gives the same error box.
Ok so i fixed it 
Just incase anyone has similar problems - the security settings defaulted back to locked down after OS update.
From security settings, I just hit “open anyway”
However, it wouldn’t let me burn any image to USB unless i opened via suso and drag and dropped the img file in from finder
Hi and welcome to the forums!
We’re tracking this issue here for which we have a PR on the works that will add notarization to Etcher for macOS Catalina.
Side note: you might still need to run Etcher with sudo /Applications/... in order for it to be able to write successfully on Catalina
I was having trouble getting this to work on Catalina but this worked for me.
I wanted to post the specific terminal command which worked for me since I wasn’t sure what the “…” meant.
In terminal put: sudo “/Applications/balenaEtcher.app/Contents/MacOS/balenaEtcher”