The statistics presented here draw on detection verdicts returned by Kaspersky products as provided by users who consented to share statistical data. The emergence of the first-ever Trojan-Gamethief-category mobile Trojan might have been the most interesting event of the quarter. Adware accounted for the overwhelming majority (61.43%) of all threats discovered in Q1 2021, a decrease of 12 percentage points from Q4 2020. RiskTool potentially unwanted applications (PUAs) up by 2 percentage points to 15.43%.”]
Source: https://securelist.com/it-threat-evolution-q1-2021-mobile-statistics/102547/