T-Mobile stock toppled to a three-month low Monday after a hacker reportedly claimed to be selling personal data from more than 100 million customers.
Vice’s Motherboard first reported the incident on Sunday. In an underground forum, a seller claimed to have obtained social security numbers, phone numbers, names, physical addresses, unique phone data and driver’s license numbers for 100 million people. Data came from T-Mobile‘s (TMUS) servers, the seller reportedly told Motherboard.
The seller is asking for 6 bitcoin, or about $270,000, for a section of the data containing 30 million social security numbers and driver’s licenses. The seller reportedly plans to sell rest of the data privately.
In response, T-Mobile stock tumbled 3.5% near 139.90 in midday trading on the stock market today.
T-Mobile Stock Tumbles On Hacking Report
T-Mobile didn’t respond to a request for comment from Investor’s Business Daily. But the company emailed a response to MarketWatch.
“We are aware of claims made in an underground forum and have been actively investigating their validity,” a T-Mobile spokesperson said. “We do not have any additional information to share at this time.”
The seller told Motherboard that T-Mobile already kicked them out of the servers, but not before downloading the data.
The reported hack is one of the biggest for T-Mobile in recent history. If confirmed, it would account for nearly all of T-Mobile’s U.S. customers. In the second quarter, the telecom giant reportedly had nearly 105 million customers in the U.S., according to FactSet.
Earlier this year, T-Mobile disclosed a smaller hack, saying cybersecurity experts helped it detect the invasion. T-Mobile stock fell 1.8% that day in January.
Follow Allison Gatlin on Twitter at @IBD_AGatlin.
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