Details in some cases include full name, location, birthday, email addresses, phone number, and relationship status, he said.
Hudson Rock showed CNN Business the phone numbers of two our senior staff which are included in the database.
Facebook did not say if it notified affected users at the time.
Stone added, “In 2019, we removed people’s ability to directly find others using their phone number across both Facebook and Instagram – a function that could be exploited using sophisticated software code, to imitate Facebook and provide a phone number to find which users it belonged to.”
Hudson Rock’s Alon Gal pointed out on Twitter that the way the data was sorted and posted on the hacking site this week makes it far more accessible for criminals to exploit.