So apparently the breach is data from various data breach processing firms, which someone has probably bought and then left on an unsecured server. Apparently no sensitive information (passwords, credit card numbers, etc), but profiles on hundreds of millions of users including names, addresses, phone numbers, email, social media pages, employment histories, and more.
So probably no wallets being compromised as a direct result of this breach, but plenty of identity stealing or social engineering potential.
that information could technically be used elsewhere to do harm.
for example to this day i still don't know how my Yahoo mail with a ridiculously strong password was hacked and the only possibility remaining is social engineering that fooled their system into resetting the password and letting the hacker access the mail. that requires this kind of data breaches to succeed.
that could end up in wallet compromises too. for instance i had a blockchain.info wallet with that email that even had the backup inside of it. i could lose money if i had any balance in that wallet!
