Bloggers spend a lot of time diligently working on their blog, so it is no surprise that they want to make sure that the blog is safe and not vulnerable to hackers. While I do not know a definite way to get protected from hackers, I would like to share a bit of advice for bloggers that do not upgrade their blog to the latest version of WP whenever it comes out. First of all, for those who do not know, upgrades of WordPress often feature security upgrades that deal with various security vulnerabilities. As you see not having an upgraded blog might be risky, but if you insist on sticking with an older version you can simply hide your WP version.
This should hide your WordPress version so that any potential hackers will not know which version your WP is. This should make you less vulnerable to attacks, because various versions of WP have different vulnerabilities. However, I still recommend upgrading to the latest version, as it is the safest thing to do and it is not that hard.