Over at our main business we have a steady stream of people contacting us to ask if we offer a service that will stop their websites from being hacked, a not insignificant number of them mention that they are currently using a service that claimed to do that and there website got hacked anyway. That second item obviously tells you that these service don’t necessarily work, but what seems more relevant to the poor state of security is that even when one of these doesn’t work these people are often sure that they can and do work, just the one they used didn’t. That probably goes a long way to explaining why the complete lack of evidence that these services are effective at all hasn’t been an impediment to people using them. The problem with that is not only do they end up not working well or at all, but the money spent on them could have been spent on services that actually improve security of these websites (and everyone else’s website if there services is anything like ours), but are not sold on false promises.
When it comes to protecting WordPress websites against vulnerabilities in plugins we provide a level of protection that others don’t for the simple reason that we do the work they don’t (but that they absolutely should be doing). The result can be seen with the plugin WP GDPR Compliance, which had multiple vulnerabilities fixed in version 1.4.3.