Telecom infrastructure provider Syniverse recently disclosed to the SEC that it discovered a hack of its systems this year, which appears to have been ongoing since 2016. The compromise affects the Electronic Data Transfer (EDT) environment for 235 of its customers, including Verizon, AT&T, and T-Mobile. The EDT handles a wide variety of sensitive customer data, including the content of SMS text messages, call records, data usage records, and billing details. Ninety-five of the top 100 mobile carriers in the world are Syniverse customers. Syniverse's systems allow different carriers around the world to connect to each others' networks, exchanging text messages between networks and enabling roaming agreements and billing.
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