The TT boss was on the six o'clock news, claiming she has received a 'ransom' demand. Incredibly, she was still talking as if TT were the victims rather than the villains. She just didn't seem to 'get it'.
That said... What are we actually worried about? So they have handed over private data on a plate, including date of birth, name, address. Shocking, as that might facilitate identity theft and bank fraud. But that information triplet of name, address and DoB is trivially easy to obtain for many people. Anybody who is a company director for example, it is public domain, freely available from Companies House.
To me, as well as a welcome opportunity for sinking TT, this is an opportunity to get the banks to pull their heads out of the sand, and appreciate they need much better security processes themselves too. Such that it takes more than a DoB and address to achieve fraud!