This thread is good and helpful but is not actually going to prevent somebody from hacking your wordpress site, not even close.
People can still hack sites at the server level through old versions of Apache. They can still hack your site via plugins that you install in the future, or components like woocommerce...and our REAL black hat friends will still keep searching for holes in each new version of wordpress that is released. They can install crap on your computer and use your cookies to get into your site (older version of WP). And I've only begun
My only point is not to have a false sense of security. My advice is to gather all information on your site, especially plugins, then search in google "wordpress version X exploit" or "[name of plugin] hack". You'd be surprised how vulnerable most sites are.
Edit: to clarify, renaming aspects of your site makes it harder for hackers to find, since they often search by exploit, but won't prevent them from hacking you if they target you directly