Saudi Press

Saudi Arabia and the world
Friday, Aug 22, 2025

Tool checks phone numbers from Facebook data breach

Tool checks phone numbers from Facebook data breach

People can now enter their phone numbers into a website to see if they appeared in a recent Facebook data breach.

Details of more than 530 million people were leaked in a database online, largely consisting of mobile numbers.

People can use the Have I Been Pwned online tool to check if their numbers or emails were compromised.

Facebook says the data is from an “old” breach in 2019 but privacy watchdogs are now investigating.

The data


Facebook said it had "found and fixed" the breach more than a year-and-a-half ago.

But the information has now been published for free in a hacking forum, making it widely available.

The database covers 533 million people in 106 countries, according to researchers analysing the data. That includes 11 million Facebook users in the UK, 30 million Americans and 7 million Australians.

Not every piece of data is available for each user but 500 million phone numbers were leaked compared with “only a few million email addresses”, Troy Hunt, a security expert who runs HaveIBeenPwned said in a blog on his website.

'Not just a tiny slice of people'


Mr Hunt launched the phone number search function after “unprecedented traffic” to the website, following the news of the Facebook data leak.

Previously, users of the platform could only search for email addresses.

Visitors to the website can now enter their mobile number into a search box, and the website will confirm if it has appeared in the leaked database.

“I wanted to ensure Have I Been Pwned could answer that question for everyone, not just a tiny slice of people,” Mr Hunt told the BBC.

It has also been suggested that Facebook’s own chief executive, Mark Zuckerberg, had his mobile number leaked in the database.

"This is the number associated with his account from the recent Facebook leak," security expert Dave Walker tweeted, along with a screenshot of Zuckerberg's leaked phone number.


The screenshot also suggests Mr Zuckerberg was on messaging platform Signal - which uses end-to-end encryption and is not owned by Facebook.

Mark Zuckerberg's phone number was released in the leak, experts have suggested

Facebook has requested users input their phone numbers since 2011, citing security reasons.

It allows for “two-factor authentication”, an additional feature that sends a text to a user’s mobile whenever somebody logs into their account.

But the tech giant has not elaborated on the recent leak, beyond saying the “old data” was "found and fixed" in August 2019.

Facebook are yet to put out a clear position on this,” Mr Hunt added. “They've alluded to a 2019 incident being the root cause, but that doesn't go far enough to explain the data in circulation.

“There's a vacuum of information right now, and that vacuum is being filled with a lot of speculation.”

Facebook did not respond to the BBC’s request for comment.

Meanwhile, several investigations have been launched into Facebook by privacy watchdogs around the world.

Ireland's Data Protection Commission said it was working with the tech firm to establish if “the dataset referred to is indeed the same as that reported in 2019”.

The Philippines’ National Privacy Commission and Hong Kong’s Office of the Privacy Commissioner have also launched probes into the breach.


De'Graft was shocked by the data Facebook stored on him


Newsletter

Related Articles

Saudi Press
0:00
0:00
Close
Dogfights in the Skies: Airbus on Track to Overtake Boeing and Claim Aviation Supremacy
Tim Cook Promises an AI Revolution at Apple: "One of the Most Significant Technologies of Our Generation"
Are AI Data Centres the Infrastructure of the Future or the Next Crisis?
Miles Worth Billions: How Airlines Generate Huge Profits
Zelenskyy Returns to White House Flanked by European Allies as Trump Pressures Land-Swap Deal with Putin
Beijing is moving into gold and other assets, diversifying away from the dollar
Cristiano Ronaldo Makes Surprise Stop at New Hong Kong Museum
Zelenskyy to Visit Washington after Trump–Putin Summit Yields No Agreement
High-Stakes Trump-Putin Summit on Ukraine Underway in Alaska
Iranian Protection Offers Chinese Vehicle Shipments a Cost Advantage over Japanese and Korean Makers
Saudi Arabia accelerates renewables to curb domestic oil use
Cristiano Ronaldo and Georgina Rodríguez announce engagement
Asia-Pacific dominates world’s busiest flight routes, with South Korea’s Jeju–Seoul corridor leading global rankings
Private Welsh island with 19th-century fort listed for sale at over £3 million
Sam Altman challenges Elon Musk with plans for Neuralink rival
Australia to Recognize the State of Palestine at UN Assembly
The Collapse of the Programmer Dream: AI Experts Now the Real High-Earners
Armenia and Azerbaijan to Sign US-Brokered Framework Agreement for Nakhchivan Corridor
British Labour Government Utilizes Counter-Terrorism Tools for Social Media Monitoring Against Legitimate Critics
WhatsApp Deletes 6.8 Million Scam Accounts Amid Rising Global Fraud
Nine people have been hospitalized and dozens of salmonella cases have been reported after an outbreak of infections linked to certain brands of pistachios and pistachio-containing products, according to the Public Health Agency of Canada
Texas Residents Face Water Restrictions While AI Data Centers Consume Millions of Gallons
Tariffs, AI, and the Shifting U.S. Macro Landscape: Navigating a New Economic Regime
India Rejects U.S. Tariff Threat, Defends Russian Oil Purchases
United States Establishes Strategic Bitcoin Reserve and Digital Asset Stockpile
Thousands of Private ChatGPT Conversations Accidentally Indexed by Google
China Tightens Mineral Controls, Curtailing Critical Inputs for Western Defence Contractors
OpenAI’s Bold Bet: Teaching AI to Think, Not Just Chat
BP’s Largest Oil and Gas Find in 25 Years Uncovered Offshore Brazil
JPMorgan and Coinbase Unveil Partnership to Let Chase Cardholders Buy Crypto Directly
British Tourist Dies Following Hair Transplant in Turkey, Police Investigate
WhatsApp Users Targeted in New Scam Involving Account Takeovers
Trump Deploys Nuclear Submarines After Threats from Former Russian President Medvedev
Germany’s Economic Breakdown and the Return of Militarization: From Industrial Collapse to a New Offensive Strategy
IMF Upgrades Global Growth Forecast as Weaker Dollar Supports Outlook
Politics is a good business: Barack Obama’s Reported Net Worth Growth, 1990–2025
"Crazy Thing": OpenAI's Sam Altman Warns Of AI Voice Fraud Crisis In Banking
Japanese Prime Minister Vows to Stay After Coalition Loses Upper House Majority
President Trump Diagnosed with Chronic Venous Insufficiency After Leg Swelling
Man Dies After Being Pulled Into MRI Machine Due to Metal Chain in New York Clinic
FIFA Pressured to Rethink World Cup Calendar Due to Climate Change
"Can You Hit Moscow?" Trump Asked Zelensky To Make Putin "Feel The Pain"
Nvidia Becomes World’s First Four‑Trillion‑Dollar Company Amid AI Boom
Iranian President Reportedly Injured During Israeli Strike on Secret Facility
Kurdistan Workers Party Takes Symbolic Step Towards Peace in Northern Iraq
BRICS Expands Membership with Indonesia and Ten New Partner Countries
Elon Musk Founds a Party Following a Poll on X: "You Wanted It – You Got It!"
AI Raises Alarms Over Long-Term Job Security
Saudi Arabia Maintains Ties with Iran Despite Israel Conflict
Russia Formally Recognizes Taliban Government in Afghanistan
×