Preserve headers/logos underneath 125 pixels high. It takes up beneficial viewing space, primarily for laptop users, that is ideal left for the good stuff to appear"above the fold" Take a cue from the massive businesses, straightforward logos completed nicely say it all. This is our #1 pet peeve - screaming logos and headers!
Let me shoot a few scare tactics your way since scare tactics seem to be what drives some people to take how to fix hacked wordpress site a little more seriously, or at least start considering the problem.
You can search. If your site is suddenly hacked by hackers, you can easily go restore your site with the use of your files and change.
You also need to 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.
It's really sexy to fan the flames of fear. That is what journalists and bloggers and politicians and public figures do. It's great for readership and it brings money to the war chests. Balderdash.
Do your homework and some hunting, but if you're pressed for find more info time and need to visit here get this done once and for all, try the WordPress security plugin that I use. It's a relief to know that my website (and company!) are secure.