Keep headers/logos under 125 pixels high. It takes up valuable viewing space, especially for laptop users, that is best left for the good stuff to appear"above the fold" Take a cue from the big companies, simple logos done well say it all. This is our #1 pet peeve - screaming logos and headers!
Install the rename your login url to secure your wordpress website Firewall Plugin. This plugin investigates requests with WordPress-particular heuristics that are simple to identify and stop attacks that are obvious.
Use strong passwords - Do your best to use a password, alpha-numeric, with upper and lower case and special characters. Easy to remember passwords are easy to guess!
You should also set the"Anyone Can Register" in Settings/General to away, and you should have some sort of spam plugin. Akismet is the old standby, the one I use, but there are lots of them nowadays.
Safety Read Full Report plug-ins can be considered as a security checker. They give you information concerning the possible weaknesses of the site and scan and check the site.
I prefer to use a WordPress plugin to get the work done. Make sure is in a position to do backups that are select, has restore performance, and can clone. Also be sure it is often updated to keep pace with all versions of WordPress. There is no use in not working, and backing your data up to a plugin that is out of date.