Like all software, WordPress requires periodic updates. These rarely take more than 15 minutes and would require no more than six or so per year. I offer a low cost updating and maintenance service. Contact me for further details.
I always install security software on the sites I build to prevent hackers either gaining control or publishing malware. I also take regular backups which are stored on a different server. If the worst should happen and your site goes down, I can have it up and running again.