Smartphone malware infections have risen sharply in the first half of the year, according to a new Nokia study.

New Figures from Nokia Threat Intelligence Report examines general trends and statistics for malware infections in devices connected through mobile and fixed networks

According to the report, smartphone infections nearly doubled between January and July compared to the latter half of 2015, with smartphones accounting for 78% of all mobile network infections.

The report also reveals that the malware infection rate hit an all-time high in April, with infections striking 1.06% of all mobile devices tracked. In addition, average smartphone infection rate increased 96% in the first half of 2016, compared to the second half of 2015 (0.49% vs 0.25%).

Kevin McNamee, Head of the Nokia Threat Intelligence Lab, says that, “today attackers are targeting a broader range of applications and platforms, including popular mobile games and new IoT devices.”

According to him, the attackers are “developing more sophisticated and destructive forms of malware.”