macos
I've downloaded an application but when I want to open this application it shows an error message saying that it will damage my computer.
I tried to download the application from multiple sources but it continues to give me the same message. When I try to open the application with my right mouse button it still gives me the same message.
I have the last open beta of OS X El Capitan if that matters. If anyone knows how I can still open it, I would appreciate it. Thanks.
I don't know of a program that works system-wide, but if you use the terminal moderately, iterm2 has this feature. Pressing Command-/ once will show the cursor with some screen fade, and pressing and holding it will white out everything on screen but the cursor.
Alternatively, not the same as fading, but there might be a way to have your text editor highlight vertical and horizontal columns. (Here's a plugin for sublime).
Apparently it downloaded the OS X El Capitan installation (under that name, or Install OS X El Capitan) in the Applications folder, which seems to be the download location. I could launch it from there.
Problem solved…
UPDATE: if this would occur during you Mac OSX Sierra download, the file you'd be looking for is "(Install) macOS Sierra" in the Applications folder.
Best Answer
I believe this is GateKeeper doing its thing.
Try slackening off the security a little bit; go to Security & Privacy prefpane, and change
Allow apps downloaded from:to a more lax setting (you may need to choose Anywhere, I'm not sure if Atlassian qualify under "identified developers").