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Wild to see the extreme Smishing plus IMSI grabbing to then use an SDR to send the SMS without going through an SMS Gateway. https://commsrisk.com/chinese-arms-dealer-sold-imsi-catchers...

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I thought SMS gateways weren’t really used anymore and the way to go was to buy a bunch of prepaid unlimited SIMs and blast out messages at a below-detection rate through thingies that rotate between 64/128/256 SIMs and 8-16 radios.

Like shown here: https://au.finance.yahoo.com/news/how-one-man-allegedly-cost...

The IMSI catching approach, wow!

Many simply get some proportion of their customers to install a malicious app which sends the spam from the victims phone number.

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