For three months of 2011, the Russian payment service Qiwi employee mined over 500,000 bitcoins on the self-service terminals of the company. This is reported by vc.ru.
The security service of the company drew attention to the fact that at night the terminals transmitted information, and their load increased.
It took three months to find out why. As it turned out, the technical director of Qiwi installed on the terminals applications for bitcoin mining.
Director of Qiwi demanded the return of the bitcoins, arguing that the resources of the company were used for their extraction. But the miner left without ever following his request. His fate remains unknown.
According to Sergei Solonin, CEO, the company did not incur direct losses from the activities of the ex-employee. However, tenants of terminals that paid for electricity could suffer.
After exposing Qiwi employee, Solonin ordered to mine at all the company's terminals. However, the idea could not be realized, due bitcoin mining difficulty increase.