Skip to Content
Silicon Valley

Facebook has leaked 419 million phone numbers

September 5, 2019
Associated Press

This isn’t even the biggest data mishap the company has been caught up in.

The news: A security researcher discovered a database pulled from Facebook that contained over 419 million phone numbers. The data included Facebook IDs and in some cases names, genders, and countries. Because the server hosting the database wasn’t password-protected, anyone could find and access it, according to Sanyam Jain, the researcher who passed his discovery on to TechCrunch. It’s unclear who pulled the information from Facebook’s systems or why, but presumably it must have been an employee to have that level of access.

Who was affected? The exposed server included 133 million records from US-based Facebook users and 18 million UK users. Another had over 50 million records from users in Vietnam. Unfortunately, there is currently no way to check if your data was among the leaked records.

History repeats itself: Facebook has been involved in so many data leaks it’s almost hard to keep count. In March this year, it turned out the company had been storing up to 600 million users’ passwords insecurely since 2012. Days later, we discovered that half a billion Facebook records had been left exposed on the public internet. 

The granddaddy of them all: The Cambridge Analytica scandal led to a $5 billion fine from the Federal Trade Commission in July, along with a stipulation that top executives will have to attest that the company has protected privacy. We will see what action, if any, is taken in light of this latest leak.

Sign up here for our daily newsletter The Download to get your dose of the latest must-read news from the world of emerging tech.

Keep Reading

Most Popular

10 Breakthrough Technologies 2024

Every year, we look for promising technologies poised to have a real impact on the world. Here are the advances that we think matter most right now.

AI for everything: 10 Breakthrough Technologies 2024

Generative AI tools like ChatGPT reached mass adoption in record time, and reset the course of an entire industry.

Scientists are finding signals of long covid in blood. They could lead to new treatments.

Faults in a certain part of the immune system might be at the root of some long covid cases, new research suggests.

What’s next for AI in 2024

Our writers look at the four hot trends to watch out for this year

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.