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 also helps in procuring from fix malware problems free hackers. You must keep a copy of your files hide away in system so 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.
Is also significant. You need to backup database and all the files you can easily bring your own site back like nothing.
In case you ever want to migrate your site elsewhere, such as a new web host, you'd be able to pull this off without a hitch, and also without needing to disturb your old site until the new one was set up and ready to roll.
You can even get an SSL Encyption Security to your WordPress blogs. The SSL Security makes secure and encrypted communications with your blog. You may keep the all of the cookies blog and history of communication so that all transactions are listed. Make sure all your sites get SSL security for maximum protection.
Oh . And incidentally, I talked about plugins. Make sure it's a secure one, when you get a plugin. Do not install any plugin just because the owner is saying that plugin can help you do that or this. Use get a software engineer to analyze it, or perhaps a test site to check the plugin. This way isn't a threat for you or your organization.