Over 11 million Android devices have been infected by the Necro trojan malware, which has spread through unofficial modified applications and even official apps on the Google Play Store. The malware can download additional components, turning infected devices into tools for adware, subscription fraud, and proxy servers. Two specific apps, Wuta Camera and Max Browser, have been highlighted for their role in the malware's distribution, with Wuta Camera having around 10 million downloads and Max Browser over a million. Users are advised to remove older versions of Wuta Camera and uninstall Max Browser. Modified versions of popular apps like Spotify Plus, WhatsApp, and Minecraft have also been compromised. To protect against malware, users should download apps only from official sources, ensure Google Play Protect is activated, review app ratings and feedback, and use antivirus software to scan for infections.