Yea that article is a bit off & largely a marketing piece.
For a start, if you disrupt (rather than MITM attack) the GPS signal, the internal time distributor host (prob sending PTP & NTP) will fall back to their internal oscillator. Usually these are Rubidium or caesium. They will have a hold over of enough days to sort out the issue.
Secondly, Chronos Technology are trying to sell a service where you don't need to rely on GPS but they will come to your DC with a highly portable time source recently GPS synced and discipline your caesium or rubidium oscillator every n days. They are trying to be the modern day Ruth Belville*.
It is useful as an idea in cases where we don't have an easy way to set up GPS in the DC and you can live with a relative clock domain.
For a start, if you disrupt (rather than MITM attack) the GPS signal, the internal time distributor host (prob sending PTP & NTP) will fall back to their internal oscillator. Usually these are Rubidium or caesium. They will have a hold over of enough days to sort out the issue.
Secondly, Chronos Technology are trying to sell a service where you don't need to rely on GPS but they will come to your DC with a highly portable time source recently GPS synced and discipline your caesium or rubidium oscillator every n days. They are trying to be the modern day Ruth Belville*.
It is useful as an idea in cases where we don't have an easy way to set up GPS in the DC and you can live with a relative clock domain.
http://en.wikipedia.org/wiki/Ruth_Belville