More than 100 people were arrested in what the London’s Metropolitan Police calls “the UK’s biggest ever fraud operation” after taking down a fraud website called iSpoof used on 200,000 potential victims in Britain alone. 

iSpoof allowed scammers to pose as officials from banks such as Barclays, Santander, HSBC, Lloyds, Halifax, First Direct, Natwest, Nationwide and TSB. Criminals paid for the service in bitcoin, according to the police report.

Scotland Yard’s Cyber Crime Unit worked in cross-national cooperation, including authorities in the U.S. and Ukraine, to take down the site this week. In a 20-month period, the Met police claims the operation earned the criminals almost £3.2 million ($3.9 million).

(by Inbar Preiss)