A look at online trading scams, which have cost European consumers billions, being perpetrated by fraudsters working from call centers, dubbed "boiler rooms" (Bloomberg)

Bloomberg:
A look at online trading scams, which have cost European consumers billions, being perpetrated by fraudsters working from call centers, dubbed “boiler rooms”  —  - ‘Boiler room’ operations scam consumers out of huge sums  — Europe's largest economy has become a key target in Europe