3.8 Billion Phone Numbers of Clubhouse Users up for Sale on Dark Web

On a hacking forum, a threat actor has begun selling the confidential database of Clubhouse, which contains 3.8 billion phone numbers. According to the threat actor, the company “saves/steals each user’s phonebook” in a confidential database that it is selling. According to the seller, the secret database has 3.8 billion phone numbers (cell phones, fixed, private, and professional numbers), each of which is given a score (Number of Clubhouse users who have this phone number in their phonebook).

The threat actor shared a link to a sample of data from the database, which included phone numbers for approximately 83.5 million Japanese consumers. Cyber News researchers revealed the personal data of 1.3 million Clubhouse users had been exposed online in April 2021.

Clubhouse refuted these charges in a statement to news agency IANS, saying, “There are a series of bots creating billions of random phone numbers.” Speaking over the alleged “secret database of Clubhouse,” the company clarified saying, “in the event that one of these random numbers happens to exist on our platform due to mathematical coincidence, Clubhouse’s API returns no user identifiable

Several specialists, in particular, have chimed in on the matter, dismissing the hacker’s claims. According to security researcher Rajshekhar Rajaharia, a list of phone numbers, such as the one in this case, maybe easily constructed, and the data leak claim appears to be false. Sunny Nehra, another researcher, pointed out that the threat actor is very new to that forum, is the least engaged, and is prone to making such “lame claims.”

“Days after scraped data from more than a billion Facebook and LinkedIn profiles, collectively speaking, was put for sale online, it looks like now it’s Clubhouse’s turn. The upstart platform seems to have experienced the same fate, with an SQL database containing 1.3 million scraped Clubhouse user records leaked for free on a popular hacker forum,” reported CyberNews.

Clubhouse is an iOS and Android social audio app that allows users to speak in voice chat rooms with thousands of people. Live talks are held on the audio-only app, and users can engage by speaking and listening. Conversations may not be recorded, transcribed, duplicated, or disseminated without prior consent, according to Clubhouse guidelines. In a funding round in April 2021, venture capitalists valued Clubhouse at roughly $4 billion.

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