https://www.theguardian.com/business/2018/sep/07/ba-british-airways-customers-hacked-credit-card-details-dark-web

Hacked data – including CVV codes – worth about £20m on dark web, cybersecurity experts say

The credit card details of 380,000 British Airways customers could already be on sale on the internet after the airline suffered a “malicious” data breach, experts have warned.