A new Juniper Global Threat Center study has pointed to Android malware possibly becoming a serious issue in just the past four months. The incidence in viruses, trojans, and other strains has jumped 472 percent since July, most of which has appeared in just the past two months. About 55 percent were spyware apps scraping and sending information in the background, while 44 percent were SMS trojans that send messages to premium numbers that put the bill on the caller.