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!
Backing up your site regularly also assists in securing from repair hacked wordpress site hackers. You must keep a copy of your documents hide away in system you can be confident of your database. This makes you a protected files that serves you in times of down is the machine. Hackers are less likely to slip from a secured back up system.
Essentially, it all will start with the fundamentals. Attempt using complex passwords. Use spaces, numbers, special characters, and letters and combine them to make a password that is special. You can also use usernames view that are not obvious.
For me it's a WordPress plugin. They're drop dead simple to set up, have all the features you need for a job such as this, and are relatively inexpensive, especially when compared to having to employ someone to get this done for you.
You can make a firewall that blocks hackers from infiltrating your blogs. From coming to your files, the hacker is prevented by the firewall. You must also have updated version of Apache. Upgrade your PHP. It is essential that your system is filled with upgrades.
The plugin should be regularly updated play nice with your plugins, to stay current with the latest WordPress release and have WordPress and restore capabilities. The ability to clone your site (in addition to regular copies ) can be useful if you ever need to do an offline website redesign, among other things.