Security firm Group-IB helped Russian law enforcement collect evidence on the activities of an alleged cybercrime operation for three years – which led to the May arrest of several suspected members of the group, including twin brothers.

Forbes reported this week that the unnamed brothers, who allegedly made up to $225,000 (12 million rubles) in less than two years, were arrested on May 20 in their St. Petersburg apartment, along with other alleged perpetrators.

In the operation, victims were allegedly infected with banking trojans, so that they could be tricked into inputting banking login credentials into a “fake page,” which was made to look like their actual banking website (via web injects). Perpetrators then called victims (presenting themselves as bank employees using information they'd obtained) or led them to other phishing pages to collect one-time SMS codes used to authenticate bank transfers, the article said.