Your mobile phone number is probably in the hands of a hacker right now, ready to be sold to the highest bidder. A cybersecurity researcher, Marc Ruef, has just shared a surprising discovery: 3.8 billion online identifiers on the darknet, resulting from a full-scale hack of the Clubhouse application. As a reminder, this is a social network similar to Discord’s voice chat rooms , valued at up to four billion dollars to date according to some experts.
The list includes not only mobile phones but also landlines, both private and business information. So how could such a leak of personal information have occurred? Clubhouse is live connected to all of its users’ contacts, which means that every time you add a phone number to your address book, it is automatically added to Clubhouse’s “secret” database.
Full phone number database of #Clubhouse is up for sale on the #Darknet. It contains 3.8 billion phone numbers. These are not just members but also people in contact lists that were synced. Chances are high that you are listed even if you haven’t had a Clubhouse login. pic.twitter.com/PfAkUJ0BL5
– Marc Ruef (@mruef) July 23, 2021
A priceless ranking?
What’s more, again according to the culprits, the content comes with a comprehensive rating, categorizing the issues based on their popularity. What you need to understand is that Clubhouse actually assigns a score to each of the numbers collected, calculated according to the number of members of the platform who count it in their directory.
With this score, “we are able to evaluate the network level of each phone number in the world” assure the criminals. These figures are particularly interesting for companies that are not very careful about the origin of their data. It is easy to imagine the windfall that a product of this type can represent for advertisers deploying large-scale cold calling campaigns.
Difficult to know if you are concerned
As the hacker specifies, who nevertheless makes available a sample of more than eighty million targets in order to prove the authenticity of his approach, the document is already up for auction. The auction will end on September 4. Those who wish can check if their number is included in the overviewThe post was made by following our tutorial on how to easily and safely access the darknet. The link to the forum where the post is located has not been publicly released by Ruef.