1) It is investigating the hacking attempt, which began in July last year.
2) Dixons insists that it only discovered this latest hack a week ago
3) "The hackers had tried to gain access to one of the processing systems of Currys PC World and Dixons Travel stores, the firm said."
4) here was "an attempt to compromise" 5.8 million credit and debit cards but only 105,000 cards without chip-and-pin protection had been leaked
5) The good news is that nearly all of them were protected by good old chip and pin - and there is no evidence of any fraud relating to the 100,000 non European cards which didn't have that protection.
All of this suggests that rather than an attempt to breach a database or storage system, the attack was persistent and similar to that which occurred to Target where attackers breached the POS card terminal payment processing system.
Altogether a more 'worrying' type of attack given the length of time it was in place.