Verizon-owned Visible, a budget cellular carrier owned by Verizon, has confirmed that hackers accessed and charged user accounts.
The incident, first reported by The Verge, came to light earlier this week after Visible customers took to social media to report that their account had been hijacked. Some reported that their email address and password had been changed, and many said that unwanted charges had been made through their Visible accounts.
One customer wrote in the Visible subreddit that their account was hacked and an iPhone bought with that user’s connected PayPal account. Another said they had three iPhones ordered within 24 hours in their name. “Each time a different shipping/billing address,” they said.
While Visible initially remained silent on the issue, the company on Wednesday confirmed on Twitter that “threat actors were able to access username/passwords from outside sources, and exploit that information to log in to Visible accounts.” This, along with a follow-up tweet advising users not to re-use passwords across multiple accounts, suggests those affected were likely victims of a large-scale credential stuffing attack, whereby stolen account credentials, typically consisting of lists of usernames and/or email addresses and corresponding passwords, are used to gain unauthorized access to accounts using automated login requests.
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