[German]On November 16, 2022, an unknown person offered a huge data set with approximately 487 million WhatsApp user data in an underground forum. The data set allegedly contains WhatsApp user data from 84 countries. The leak contains also mobile phone numbers of the WhatsApp users.
The Messenger service WhatsApp, which belongs to the Facebook group Meta, is said to have two billion users worldwide. Someone seems to have siphoned off a large amount of user data that they store in their profiles on WhatsApp. It is said to be a data stock that includes the year 2022.
A total of around 487 million WhatsApp user data was offered in the underground forum on November 16, 2022. The screenshot above shows the amount of data for several countries. The site Cybernews has revealed some details about these datasets in this article (thanks to the reader for the tip).
At the request of a security researcher cooperating with Cybernews, the seller of the WhatsApp database submitted a sample from the dataset, which included the phone numbers used for WhatsApp of 1097 UK and 817 US users. Cybernews claims to have verified all the numbers included in the sample. The editorial confirmed that all phone numbers from the sample problem belong to WhatsApp users.
The seller of the dataset did not disclose how he got the WhatsApp phone data. He only stated against Cybernews that he had used "his strategy" to pull the WhatsApp data. According to the seller's information, all phone numbers should belong to active WhatsApp users. Cybernews published in the article a list of all countries along with the number of records from which WhatsApp data was siphoned.
Phone numbers published in data leaks can be misused for phishing, fraud, attacks via WhatsApp or even (depending on the country) for telemarketing. The case shows once again how vulnerable the digital society has become. This is because WhatsApp gets access to the stored contacts via the app.
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