Earlier quoted context omitted.
Facebook did not authorize data retention. CA’s actions were therefore unauthorized use of data, which is the textbook definition of a data breach.
...you mean facebook said "don't keep this" and then they kept it? And people are calling that a breach?
If you pay a company for a service, and then use the service against the terms of use, putting millions of people into danger, you have created a massive data breach of unauthorized data access that has massive real-world physical consequences.
This was a data breach of the highest order.