A cryptocurrency mining malware had operated for 2 years not being noticed until now. The virus infected over a million computers in China and brought $2 million to its creators, according to a local news report.
Cybercriminals created and embedded the malware inside internet browser plug-ins they had previously developed for diverse purposes. The police of China’s Da Lan city arrested 20 suspects who had profited from mining on a large number of seized computers. Since minor cryptocurrencies require less power, the backend mining processes are quieter and are yet to be noticed by computer owners, which explains the longlasting crime's stealthiness.