how save is WordPress

If you keep up with the latest version of WordPress and the plugins and do a little “hardening” WP is a pretty secure system. Any website can be hacked, but you can do much to not make that too easy. Most people that get hacked are neglecting to upgrade, use insecure plugins, get hacked through another website on a shared server, have stupid passwords, etc. I’ve had a coupld of WP installations for a year and a half and I’ve never been hacked so far.