You are blogger; Do you manage your business website? Or do you just want to know if you are properly protected? Any of the three that apply below can be found in some easy and immediate ways to protect joomla website you.
First of all, you should always use the latest secure version of joomla, but also extensions of. Upgrades must be made as soon as possible and, in any case, within the first 48 hours of the release of the new version.
You also need to enable secure connection both for the public domain and for management. You can enable the setting by joomla management.