The latest tvedit email shows the following text
Essential Security built into your home network, at no extra cost
Stay safe online with always-on security tools built into your home network – you don’t need to lift a finger to protect yourself and your loved ones.
Along with a link which vander18 didn't include (they've now deleted their forum account hence the thread is now by Anonymous)
The link in the email is https://www.virginmedia.com/the-edit/online-safety/virgin-media-essential-security
That page opens an article describing the virtues of the free Virgin Media Essential Security so "all Virgin Media customers with a broadband package can get Essential Security cover. It’s built into our broadband network at no extra cost"
The link provided by vander18 (https://www.f-secure.com/gb-en/virgin-media?vm-segment=virginmediaunlimited&ecid=9004 ) isn't included within the email.
It's a separate invitation towards the bottom of the tvedit article offering a paid upgrade (with a no-commitment three-month trial) to an Advanced Security package which includes premium features. The customer isn't enrolled into this upgrade - it's an invitation which can either be accepted or declined and doesn't affect the free "Essential Security"