The good news, if you can call it that, is that the company reassured its users and investors that it wasn't hacked.
The bad and unsettling news is that Facebook says the hackers simply scraped the profile information from their website. The company stressed that the system itself was not breached, but rather, that the hackers used a large set of phone numbers linked to the profiles they ultimately made off with.
Based on a review of a sample of the data, nearly every record published to the hacking forum contained that user's cell number, Facebook ID, name, and gender. While that's not sufficient to outright steal someone's identity, it represents and excellent start from a hacker's perspective.
The company's formal statement regarding the matter reads in part as follows:
"This is another example of the ongoing, adversarial relationship technology companies have with fraudsters who intentionally break platform policies to scrape internet services."
"As a result of the action we took, we are confident that the specific issue that allowed them to scrape this data in 2019 no longer exists."
A deeper look into the matter reveals that the 'specific issue' in question that allowed the massive data leak was a feature called 'Contact Importer' that ostensibly made it easier for friends to find one another on the platform. As it turns out, hackers quickly learned they could abuse the feature and Facebook ultimately pulled the plug on it, but of course, not before the hackers made off with hundreds of millions of user profiles.
Independent security researchers around the world were less than impressed by the company's delayed, and somewhat lackluster response. In trying to paint the issue as being old news, they completely miss the point. More than half a billion of their users saw their data compromised because of a feature the company itself introduced and then later deactivated, when its potential for abuse came to light. For a company as enormous as Facebook, it's not a good look.