We operate a WordPress website, with gsdetectors.reubrosample.tk as the development version and gsdetectors.com as the live version. Currently, gsdetectors.reubrosample.tk is hosted on Onohosting, while gsdetectors.com is hosted on Bluehost. Unfortunately, gsdetectors.com faces recurrent server hack attacks, causing disruptions on the VPS server. Remarkably, gsdetectors.reubrosample.tk, hosted on Onohosting, has remained untouched by any attacks to date, ensuring continuous service.
Given the security challenges faced by gsdetectors.com, we are seeking recommendations for effective security measures, free firewalls, or security plugins to prevent these attacks. Any suggestions would be greatly appreciated.