@puffin67 despite being myself a rather extreme user of over-the-top router hardware and software for use on my home network, and update firmware on all my equipment weekly, I agree with the previous replies.
Over the years, so many people on this forum have contributed to pointing out any possible failings in the Hub One firmware, that it is unlikely that there are any remaining glaring 'security' issues that haven't already been fixed.
If the Hub One does everything you require of it, then it will be fine until it eventually fails, or your needs change, or some new broadband technology replaces your current internet connection.
You could check for yourself that your router is functioning and relatively secure by doing some simple tests -
Go to https://www.grc.com , under the <Services> button, click on "ShieldsUP!", then click on the <Proceed> button.
From that page, click on the <All Service Ports> button, let the firewall test run, then read the results and recommendations.
Again, go to https://www.grc.com , under the <Services> button, click on "ShieldsUP!", then click on the <Proceed> button.
this time click on the <Instant UPnP Exposure Test>, and check that UPnP isn't compromised.
