iPad Pros on sale at Amazon! Use this link (note: sales via this link may generate a commission to Christian Boyce, from Amazon.
Hit the Escape key (esc, at top left of keyboard) instead of mousing to and clicking on the “Cancel” button in any dialog box. Bonus Shortcut: Enter (or Return) almost always clicks the default button (the one with the heavier border) in a dialog box. Double-Bonus Shortcut: Command-D almost always clicks the “Don’t Save” button.
----- Intego Internet Security X9. The best. Scans for viruses. Watches for inbound network attacks. Works with macOS 10.8 and higher, including Mojave. Install it and relax, knowing you're covered. Free trial. This is what I use.