Recently WordPress got some security issue. So, You need to update your WP version. Also better if you also update and optimize your site monthly.
If you want, I can help you on this position with a very small charge monthly only $19 per website. You will receive list of services bellow –
- WordPress Update if available
- All Plugins Update if available
- All Themes update if available
- Full WordPress Backup
- Full Database Backup
- Some others tweak if needed
- Anytime Urgent Update if any security bug founded
Overall, I will check and maintains your WordPress site security issue. So, If you interested, you can subscribe all of this services with very small charges only for $19/month (single website).