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I was sort of teasing this story in advance last week, but this piece represents a truly mind-numbing amount of research and trudging through more than 8 months of Telegram chat logs from multiple cybercrime groups.
"Three different cybercriminal groups claimed access to internal networks at communications giant T-Mobile in more than 100 separate incidents throughout 2022, new data suggests. In each case, the goal of the attackers was the same: Phish T-Mobile employees for access to internal company tools, and then convert that access into a cybercrime service that could be hired to divert any T-Mobile user’s text messages and phone calls to another device.
https://krebsonsecurity.com/2023/02/hackers-claim-they-breached-t-mobile-more-than-100-times-in-2022/