"were taken from a Sitel support engineer’s computer upon which an attacker had obtained remote access using RDP. This device was owned and managed by Sitel. The scenario here is analogous to walking away from your computer at a coffee shop" It really is not analogous at all. That RDP was enabled, let alone could be accessed from outside the network is worrying. To me this would appear that, to save a buck, they outs…
The scenario here is analogous to walking away from your computer at a coffee shop... with your computer unlocked and logged in to various things