Not personally concerned about compensation, as i wasn't affected by the breach, but alerted by Amex as was everyone else [I guess]. My Amex, which I use for BA and just about everything else, remained secure.
Whereas ... I used my MBNA Visa card at 4 locations in Malta back in May, and ended up with a couple of 'mystery transactions' in June! Alerted by MBNA, new card arrived within a few days [including an intervening weekend].