How to find data leak sites

The number of data breaches caused by threat actors continues to grow at an unprecedented rate. Cyber researchers are frequently asked which specific data belonging to a customer has been leaked, or whether an individual’s personal information is included in a compromised dataset. To accurately answer these questions, identifying the threat actor’s data leak site or extortion site (leak location) is essential. In the past, I spent countless hours scouring hacker forums and Telegram groups to see if stolen data was being offered. However, more often than not, it is not yet available there. Once you successfully pinpoint the threat actor’s official leak site, the likelihood of gathering concrete intelligence about the actual contents of the dataset increases significantly.

Sources on the web

First and foremost, it is crucial to determine which specific group is responsible for the breach. Fortunately, there are several valuable resources available on the internet where you can search for a victim’s name to identify the associated threat actor. Platforms such as breach.house and ransomware.live are excellent examples of tools that map these connections efficiently.

Ransomware Tracker & Data Breach Monitoring | Breach House

Ransomware.live 👀

Both breach.house and ransomware.live display the threat actor’s dark web leak location -if known- directly on their profile page.

Get digistam’s stories in your inbox

Join Medium for free to get updates from this writer.

Remember me for faster sign in

Breach House > Known Leak Locations

Ransomware.live > Known Locations

Once you know the location and have the capability to conduct research on the dark web (preferably using Tails or Qubes OS), you can visit the known leak location and determine exactly what data is being offered.

AI

Artificial Intelligence is rapidly gaining popularity, creating new opportunities in the field of cybercrime investigation. For instance, you can ask an AI model, “What is a known data leak site of threat actor XYZ?” However, keep in mind that not all AI platforms respond to these queries with the same level of openness. Google’s AI, for example, often states that such information cannot be shared due to safety and security policies. In contrast, ChatGPT is generally less restrictive and will provide the ONION address if it is part of its training data.

Chat GPT

Conclusion

Validating data breaches in an ever-evolving threat landscape requires moving beyond traditional hacker forums and Telegram channels. By leveraging specialized aggregators like breach.house and ransomware.live, researchers can efficiently pinpoint a threat actor’s official data leak site. While emerging tools like ChatGPT can speed up the discovery of these ONION addresses, maintaining a secure research environment via Tails or Qubes OS remains paramount. Ultimately, finding the definitive source of the leak is the only way to provide clients with the accurate, actionable intelligence they need to protect their data.