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!
I back up my blogs regularly using a free plugin WP DB Backup. I can restore my website to the last 13, if anything happens. I use my site to be scanned by WP Security Scan plugin regularly and suspicious-looking requests to be blocked by WordPress Firewall to clean hacked wordpress site.
Backup plug-ins is also significant. You want to backup database and all the files you can easily bring back your blog like nothing happened.
Yes, you want to do regular backups of your site. I recommend at least a weekly database backup and a monthly "full" backup. have a peek at this site More. Definitely more if you make changes and additions to your site. If you have a community of people which are in there all the time, or make changes multiple times a day, a daily backup should be a minimum.
Black and whitelists phrases based on find out this here which area they look inside, in a page request. (unknown/numeric parameters vs. known post bodies, comment bodies, etc.).
There are always going to be risks being online (or even just being alive!) Also it's easy to get caught up in the panic. We put the breaks on when we get caught up in the panic. This isn't a reaction that is good. Simply take some common sense precautions forge ahead. It will have to discover here be dealt with then, if something bad does happen and no amount of quaking in your will have helped. All is good, if nothing does and you haven't made yourself ill.