Hacking into WordPress sites
I get regular updates from my hosting company explaining why I need to pay extra for this plugin or this service to protect my sites from being hacked.
These emails always talk about WordPress. That is because WordPress is such a widely used tool and is inherently vulnerable to hacking. WordPress plugins are constantly being developed to protect the sites from the latest hacking method, so the software has to be constantly scanned for malware, and WordPress plugins need to be updated with the latest ant-hacking code in order to protect a WordPress site.
Obviously to do this job properly requires a great deal of time and energy from the developer and therefore cost to the client.
If you choose not to do anything, you may find that a WordPress site, over time becomes unusable as various modules get out of step with each other.