Home Cyber Security News Data Of 533 Million Facebook Users Leaked On Dark Web For Free

Data Of 533 Million Facebook Users Leaked On Dark Web For Free

by Abeerah Hashim
533 million facebook users data dumped

Facebook has once again caught media attention for a not-so-good reason. This time, again, Facebook users’ data privacy suffered a breach. It turns out that some hackers exploited a Facebook vulnerability to scrap data, particularly, users’ phone numbers. Consequently, data of 533 million Facebook users is now available publicly on the dark web.

533 Million Facebook Users Data Leaked

Reportedly, a new data dump has surfaced online that includes 533 million records of Facebook users. The data includes the personal information of the users as well as their phone numbers.

The dumped record even includes the details of Facebook founders. These include Mark Zuckerberg, Chris Hughes, and Dustin Moskovitz, who’re among the first 10 users registered on Facebook.

Every record from the data includes a user’s name, Facebook ID, location, gender, date of birth, relationship status, occupation, mobile number, and email address.

Considering how most of these details are often publicly visible, it seems the data dump emerged from a scraping activity.

However, Alon Gal, co-founder and CTO of cybercrime intelligence Hudson Rock, also highlighted possible exploitation of a bug. Gal, first disclosed this data dump in January 2021.

While Facebook patched the vulnerability later, Gal suspects that the potential hacker might have exploited this flaw to scrape phone numbers.

Specifically, the data includes details of 533,313,128 Facebook users belonging to 106 countries. The top five countries appearing in this data dump are Egypt, Tunisia, Italy, the USA, and Saudi Arabia.

Gal has shared the full list of countries in his tweet below.

Initially, the seller put up the data for sale for $30,000. However, the same seller has now released the data as free.

Facebook’s Response

After the news gained media traction, Facebook provided the following statement whilst confirming the incident that happened two years ago.

This is old data that was previously reported on in 2019. We found and fixed this issue in August 2019.

According to The Record, the attacker exploited the vulnerability in the Facebook contacts importer feature to match the numbers in the supplied list with the existing profiles. This allowed the attacker to build up the data.

Facebook eventually detected that activity and contained the attack whilst fixing the bug. The tech giant confirmed that the dumped record includes old data collected in 2019.

Though, the details included in the dumped data are not likely to change ever (such as date of birth). Users also don’t change phone numbers frequently on accounts.

For now, all Facebook users should remain cautious about phishing emails and SMS asking for any details from them.

You may also like

Leave a Comment

Latest Hacking News

Privacy Preference Center

Necessary

The __cfduid cookie is used to identify individual clients behind a shared IP address and apply security settings on a per-client basis.

cookie_notice_accepted and gdpr[allowed_cookies] are used to identify the choices made from the user regarding cookie consent.

For example, if a visitor is in a coffee shop where there may be several infected machines, but the specific visitor's machine is trusted (for example, because they completed a challenge within your Challenge Passage period), the cookie allows Cloudflare to identify that client and not challenge them again. It does not correspond to any user ID in your web application, and does not store any personally identifiable information.

__cfduid, cookie_notice_accepted, gdpr[allowed_cookies]

Advertising

DoubleClick by Google refers to the DoubleClick Digital Marketing platform which is a separate division within Google. This is Google’s most advanced advertising tools set, which includes five interconnected platform components.

DoubleClick Campaign Manager: the ad-serving platform, called an Ad Server, that delivers ads to your customers and measures all online advertising, even across screens and channels.

DoubleClick Bid Manager – the programmatic bidding platform for bidding on high-quality ad inventory from more than 47 ad marketplaces including Google Display Network.

DoubleClick Ad Exchange: the world’s largest ad marketplace for purchasing display, video, mobile, Search and even Facebook inventory.

DoubleClick Search: is more powerful than AdWords and used for purchasing search ads across Google, Yahoo, and Bing.

DoubleClick Creative Solutions: for designing, delivering and measuring rich media (video) ads, interactive and expandable ads.

doubleclick

Analytics

The _ga is asssociated with Google Universal Analytics - which is a significant update to Google's more commonly used analytics service. This cookie is used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page request in a site and used to calculate visitor, session and campaign data for the sites analytics reports. By default it is set to expire after 2 years, although this is customisable by website owners.

The _gat global object is used to create and retrieve tracker objects, from which all other methods are invoked. Therefore the methods in this list should be run only off a tracker object created using the _gat global variable. All other methods should be called using the _gaq global object for asynchronous tracking.

_gid works as a user navigates between web pages, they can use the gtag.js tagging library to record information about the page the user has seen (for example, the page's URL) in Google Analytics. The gtag.js tagging library uses HTTP Cookies to "remember" the user's previous interactions with the web pages.

_ga, _gat, _gid