The personal data of 9.4m Cathay Pacific passengers has been stolen in a cyber attack on the Hong Kong airline.
https://www.telegraph.co.uk/technology/2018/10/24/cathay-pacific-says-data-94-million-passengers-stolen-hack/Payment card information, combined with other user data from other breaches and social media, builds a complete profile. In the hands of fraudsters and criminal organisations, these valuable identity sets are usually sold to other cybercriminals and used for myriad criminal activities.
Maybe instances such as this will wake people up to the tangible benefits of using Bitcoin, blockchain and cryptocurrency-not being as vulnerable in an age of unbeknownst vulnerability.
using bitcoin
might help in some situations, but in many cases won't make a difference. as pointed out here, credit card information doesn't actually endanger much beyond the ability to make fraudulent purchases---it only gives hackers a name and billing zip code.
you'll give away much more personal information and/or ID documents than that when doing business with eg an airline, even if you use bitcoin. same goes for having goods shipped to your physical address.
bitcoin won't fix the fact that businesses often require your personal information, and they don't protect it.