The article describes 300 servers and 100,000 SIMs across a handul of locations.

In some countries you can find entire office blocks filled with people who do nothing all day but participate in scam enterprises. I don't think the scale of this phone bank, if its as described, is that surprising really.

They made cold calling illegal in my country. Also you cannot just sell customer data. It made an entire industry disappear and nobody mourned.

But I'm sure some American lawyer would call that a breach of the constitution.

How does your country protect against callers and data sales outside of its jurisdiction?