Huge collection of user data leaked online

Security researcher Troy Hunt, who runs the service Have I Been Pwned, has discovered almost 773m unique email addresses and around 22m unique passwords hosted on Kim Dot Com's cloud service MEGA.

In a blog post, he revealed that the collection contained over 12,000 separate files and more than 87GB of data.

The data, which Hunt refers to as Collection #1, is a set of email addresses and passwords totalling 2,692,818,238 rows on a spreadsheet that has allegedly come from numerous sources.

Hunt provided more details on his discovery in his blog post, saying:

"What I can say is that my own personal data is in there and it's accurate; right email address and a password I used many years ago. In short, if you're in this breach, one or more passwords you've previously used are floating around for others to see." 

Collection #1

Some of the passwords included in the dataset have been dehashed and appear as plain text in the files including Hunt's own password.

He first began investigating the data stored on MEGA when multiple people reached out to him and Collection #1 was also discussed on a hacking forum.

As of now, the collection has been removed from the cloud service but the passwords and email addresses stored within it are likely still floating around on the internet.

Hunt's service Have I Been Pwned is an excellent resource to see if you or your family's passwords have been leaked online.

Via ZDNet

  • We've also highlighted the best VPN to help protect your privacy online
Anthony Spadafora

After working with the TechRadar Pro team for the last several years, Anthony is now the security and networking editor at Tom’s Guide where he covers everything from data breaches and ransomware gangs to the best way to cover your whole home or business with Wi-Fi. When not writing, you can find him tinkering with PCs and game consoles, managing cables and upgrading his smart home. 

Latest in Security
cybersecurity
Chinese government hackers allegedly spent years undetected in foreign phone networks
Data leak
A major Keenetic router data leak could put a million households at risk
Code Skull
Interpol operation arrests 300 suspects linked to African cybercrime rings
Insecure network with several red platforms connected through glowing data lines and a black hat hacker symbol
Multiple routers hit by new critical severity remote command injection vulnerability, with no fix in sight
Code Skull
This dangerous new ransomware is hitting Windows, ARM, ESXi systems
An abstract image of a lock against a digital background, denoting cybersecurity.
Critical security flaw in Next.js could spell big trouble for JavaScript users
Latest in News
DeepSeek
Deepseek’s new AI is smarter, faster, cheaper, and a real rival to OpenAI's models
Open AI
OpenAI unveiled image generation for 4o – here's everything you need to know about the ChatGPT upgrade
Apple WWDC 2025 announced
Apple just announced WWDC 2025 starts on June 9, and we'll all be watching the opening event
Hornet swings their weapon in mid air
Hollow Knight: Silksong gets new Steam metadata changes, convincing everyone and their mother that the game is finally releasing this year
OpenAI logo
OpenAI just launched a free ChatGPT bible that will help you master the AI chatbot and Sora
An aerial view of an Instavolt Superhub for charging electric vehicles
Forget gas stations – EV charging Superhubs are using solar power to solve the most annoying thing about electric motoring