When are they going to learn?
If you learnt nothing from the first four breaches it is "be open with your customers and tell them early" unfortunately the advice is still "if you have a connectivity problem simply reset your router".
As before, no proactive advice whatsoever - Yes I'm a customer - no I have not received any proactive communication.
Dido, your customers are reading about the severity in the papers and on the BBC, an email - if only to say "you do not have an affected router" would not go amiss. for those with affected routers then what you are actually doing.