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T-Mobile
Telecom Giant and T-Mobile Parent Deutsche Telekom Plans to Mine Bitcoin
The company also revealed that it's running Bitcoin and Lightning network nodes.

Helium Ditches Own Blockchain in Favor of Solana After Community Vote
Community members of crypto-powered wireless network Helium overwhelmingly voted to ditch its blockchain and migrate to Solana. Helium also announced that subscribers will get U.S. nationwide 5G coverage through a new five-year agreement with cellular giant T-Mobile.

T-Mobile’s Data Hack and the Case for Web 3.0
T-Mobile CEO Mike Sievert apologized for a cyberattack that exposed more than 54 million people to greater risk of fraud and identity theft, saying the firm has hired security experts to strengthen its defenses. This marks the carrier’s third major security leak in two years.

Another Bitcoin Investor Sues T-Mobile Over SIM Swap Attack
This isn't the first time T-Mobile has faced litigation over its alleged breach in its duty of care over customer data.

T-Mobile Sued Over SIM Attack That Resulted in Loss of $450K in Bitcoin
The plaintiff lost 15 bitcoin after an interaction with a T-Mobile customer who had been victim of a SIM-swapping attack.

Victims Sue AT&T, T-Mobile Over 'SIM Swap' Crypto Hacks
A cryptocurrency-focused law firm in the U.S. says it has filed lawsuits against AT&T and T-Mobile on behalf of victims of "SIM swapping" hacks.

T-Mobile's Blockchain Work Is Quietly Coming Together
T-Mobile has entered the blockchain space and it's using Hyperledger technology as a way to rebuild its services on open-source software.
