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One of the world's largest and most prolific Trojans has been uncovered by security researchers, who claim to have traced the source of the Trojan family and its authors to an "underground internet industry chain" in China.

The Trojan, dubbed Hummer, infects over one million users' phones and rakes in up to $500,000 £375,252 on a daily basis.

According to researchers at the Cheetah Mobile Security Research Lab, Hummer has so far affected users in 25 countries and is spreading rapidly across the world.

India, Indonesia, Turkey and China have been the most severely affected by the Trojan.

However, some European countries including Germany, Romania, Russia, Ukraine as well as the US have also been affected by the malware sprouting Trojan.

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