A new malware called Sturnus spreads through sideloaded APKs and can steal chats, banking information, and control devices. It reads decrypted chats, creates fake banking overlays, and can remotely access Android devices. Sturnus disguises itself with fake Android update screens, and users in Europe have already fallen victim to it. The malware is primarily spread through attachments sent via messaging applications and exploits Accessibility settings to read screen content and impose overlays on banking applications. Google has not detected this malware in the Google Play Store, thanks to Play Protect's scanning efforts. Users are advised to exercise caution when downloading APKs.