Clubhouse was hacked and exposed “illegal theft” of more than 3.8 billion phone numbers

Clubhouse is a social audio app for iOS and Android that allows users to communicate in voice chat rooms that can accommodate thousands of people. Clubhouse became popular all over the world in February. At that time, the popularity not only swept the United States, but also occupied the first place in the Japanese App Store. At that time, it also directly aired on our Chinese Weibo hot search, and once an invitation code rose to more than 1,000 US dollars. Venture capitalists valued Clubhouse at nearly $4 billion in a funding round as of April 2021.

Clubhouse was hacked and exposed “illegal theft” of more than 3.8 billion phone numbers

Clubhouse was created in April 2020 by Paul Davison and Rohan Seth.

1.3 million user records were leaked in April 2021.

As of May 2020, it has a market cap of $100 million.

In January 2021, the social platform was valued at $1 billion, making it considered a unicorn startup. The valuation follows a Series B funding round led by U.S. venture capital firm Andreessen Horowitz.

Weekly active users at the start of the year were 2 million.

As of February 2021, Clubhouse is hosting up to 10 million weekly active users.

Under the app store’s social media network category, Clubhouse ranked 8th to 10th last May.

As of January 2021, the platform is backed by more than 180 investors.

As of May 2021, the platform has exceeded 15 million users.

This APP has many users in China, and this APP later came out that many anti-China people gathered to use audio discussion meetings and other news.

Data breach exposes Clubhouse ‘illegally stealing and collecting’ user phonebooks

Just yesterday, a hacker began selling Clubhouse’s secret database of 3.8 billion phone numbers on a forum.

Clubhouse was hacked and exposed “illegal theft” of more than 3.8 billion phone numbers

According to the hackers, Clubhouse “saved/stealed every user’s phone book” in a secret database it sold. The seller claims that the secret database contains 3.8 billion phone numbers (mobile + landline + private + professional phone numbers.), each ranked by a score (the number of Clubhouse users who have this phone number in the phone book).

The attackers previously posted a link to a data sample contained in the database containing the phone numbers of more than 83.5 million Japanese users.

Clubhouse’s previous data was scraped and leaked online

In April 2021, researchers discovered that the personal data of 1.3 million Clubhouse users had been leaked online. Experts discovered an ad for a free SQL database on hacker forums containing 1.3 million scraped Clubhouse user records.

“After scraping data from more than 1 billion Facebook and LinkedIn profiles, in general, just days after selling online, it looks like it’s now Clubhouse’s turn. The upstart platform seems to have experienced the same fate, a SQL database containing 1.3 million scraped Clubhouse user records leaked for free on a popular hacking forum.”media reported.

The leaked records included clubhouse user IDs, names, usernames, Twitter usernames, Instagram usernames, the number of followers, the number of people the user followed, the date the account was created, and the invitation to the user’s profile name. Financial data is not included in the data breach.

Clubhouse was hacked and exposed “illegal theft” of more than 3.8 billion phone numbers

Clubhouse has since released a statement on social media about the incident, saying their systems had not been compromised. The company said the data was already publicly available and accessible by “anyone” through their API.

If what the hackers say is true, Clubhouse is a serious violation of GDPR, illegally stealing and importing all users’ contacts and phone numbers into a secret database to store privately, which means that even if you are not a user of the platform, your number is likely to exist on the platform database, serious violations. As of press time, Clubhouse has not issued a statement on the incident.

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