Facebook data breach

From Breaches, in the HARD wiki · Updated
This article is about the August 2019 breach of Facebook. For every breach, see Breaches.

The Facebook data breach exposed 509,458,528 accounts from facebook.com in August 2019. The data taken includes dates of birth, names, email addresses and phone numbers and 4 more kinds of data.[1]

Have I Been Pwned verified it and added it to its search on 4 Apr 2021, 20 months later. It is the 4th largest of the 618 breaches in HARD’s list.

What was exposed

Facebook’s breach included 8 kinds of data. What each lets criminals do:

DataWhat it’s used for
Dates of birthUsed to prove who you are to banks and phone companies.
NamesMakes scam messages personal enough to believe.
Email addressesExpect scam emails that name the company to look genuine.
Phone numbersExpect scam texts and calls, and a higher risk of someone moving your number to their SIM.
EmployersPersonal details that make scam messages more convincing.
GendersPersonal details that make scam messages more convincing.
Geographic locationsRoughly where you live.
Relationship statusesPersonal details that make scam messages more convincing.

What to do

  1. Check whether you’re in it.Search your email address on Have I Been Pwned. It tells you which breaches it appears in, Facebook among them, without showing the data.
  2. Distrust messages that mention Facebook.Scammers use breach data to sound genuine. Don’t click links in emails or texts about the breach; go to the site yourself.
  3. Put a PIN on your phone account.Ask your mobile provider for a port-out PIN, so no one can move your number to their SIM.

Criminals use leaked details like these to make scam texts, emails and calls look real. How to spot the ones that follow a breach like this: WhatsApp scams and Wrong number text scams.

Timeline

  • : the breach, as best it can be dated.
  • : Have I Been Pwned verifies the data and adds it to its search, 20 months later.
  • : the entry was last updated.

Breaches often stay hidden for a long time. Until it came out, people in it had no reason to change anything.

Similar breaches

Breaches that leaked the same kinds of data, closest in time:

See Breaches for all 618, and Updates for keeping your devices patched.

References

  1. ^ Troy Hunt. “Facebook”, Have I Been Pwned, added 4 Apr 2021. Breach data licensed CC BY 4.0.