https://tech.newstatesman.com/security/facebook-cambridge-analytica-fine-ico

The UK’s privacy watchdog has fined Facebook £500,000 for “serious breaches” of data protection law relating to the Cambridge Analytica scandal.

It is the maximum fine the Information Commissioner’s Office could have issued under the Data Protection Act 1998. Under GDPR, the US tech giant could have been fined up to four per cent of its annual global turnover.