Overview of Q1 2026 Mobile Threat Landscape
The first quarter of 2026 saw notable shifts in the mobile threat environment, with overall attack numbers decreasing but persistent risks from sophisticated malware and banking Trojans. According to data from the Kaspersky Security Network (KSN) — a global threat intelligence system powered by anonymized data voluntarily shared by users — the period from January to March 2026 revealed both encouraging trends and ongoing challenges for mobile users.
Kaspersky updated its threat detection methodology in the third quarter of 2025, which affected statistical calculations across all sections of this report except installation package data. To ensure consistency, previous quarters were recalculated. Consequently, figures in this article may differ from earlier publications, but the new methodology allows accurate year-on-year comparisons going forward.
Quarter in Numbers
KSN data for Q1 2026 highlights the following key statistics:
- Over 2.67 million attacks involving malware, adware, or unwanted mobile software were prevented.
- The Trojan-Banker category emerged as the dominant mobile malware threat, accounting for 10.86% of all detections.
- More than 306,000 malicious installation packages were identified, including:
- 162,275 packages related to mobile banking Trojans.
- 439 packages related to mobile ransomware Trojans.
Quarterly Highlights
The total number of malware, adware, or unwanted software attacks on mobile devices decreased to 2,676,328 in Q1 2026, down from 3,239,244 in the previous quarter. This drop was primarily driven by a reduction in adware and RiskTool detections. However, the decline does not indicate a lower risk for mobile users — the number of unique users targeted by these threats remained relatively stable.
Notable events during the quarter include:
- Kimwolf botnet and IPIDEA proxy network: Researchers at Synthient discovered a link between the notorious Kimwolf botnet and the IPIDEA proxy network. This network was later taken down in cooperation with the Global Threat Intelligence Group (GTIG).
- SparkCat crypto stealer resurfaces: In early 2026, several apps on both Google Play and the App Store were found to contain a new variant of the SparkCat crypto stealer. The Android version hid its Trojan code using a custom Dalvik-like virtual machine to decrypt an obfuscated Rust library. The iOS variant leveraged Apple’s proprietary Vision framework for optical character recognition (OCR).
Mobile Threat Statistics
Malware Samples and Installation Packages
The number of Android malware samples detected in Q1 2026 saw a slight increase compared to Q4 2025, reaching a total of 306,070.
The detected installation packages were distributed by type as follows:
- Trojans (including banking Trojans and ransomware) – the largest category
- Adware
- RiskTools
- Other malware families
While the specific proportions for each type are not fully detailed in the current report, the dominance of Trojan-Banker (10.86% of all detections) underscores the continued focus of cybercriminals on financial theft via mobile devices.
Geographic Distribution and User Impact
Although overall attack volumes decreased, the threat landscape remained active across multiple regions. The stability in unique user numbers suggests that attackers are refining their targeting rather than reducing their efforts. Users are advised to remain vigilant, especially when downloading apps from unofficial sources or granting permissions to applications.
Conclusion and Recommendations
The Q1 2026 mobile threat report reveals a complex picture: a drop in raw attack counts due to fewer adware and RiskTool outbreaks, but heightened sophistication in targeted attacks like banking Trojans and the SparkCat stealer. The takedown of the IPIDEA proxy network demonstrates the effectiveness of industry collaboration, but new evasion techniques — such as custom virtual machines and OCR — show that cybercriminals are investing in stealth.
For mobile users, maintaining updated security solutions, avoiding suspicious app installations, and being cautious with permissions remain essential practices.