A database of 419 million phone numbers linked to Facebook accounts were found on an unsecured server.
According to Facebook, the numbers were scraped before Facebook cut of access to user number.
The data has now been taken down, but, of course, nobody knows how many times it was cloned.
Facebook was rather glib over the data saying it's old data.
“This data set is old and appears to have information obtained before we made changes last year to remove people’s ability to find others using their phone numbers,” the spokesperson said. “The data set has been taken down and we have seen no evidence that Facebook accounts were compromised.”
Bearing in mind how important phone numbers are becoming, it's not good that it was possible to scrape the data at all, imho.