Google has introduced a new "advanced flow" for Android sideloading, which includes a mandatory 24-hour waiting period for users installing applications from unverified developers. This follows a developer verification mandate requiring all Android applications to be registered by verified developers to help identify malicious actors and reduce malware distribution. The new sideloading protocol aims to mitigate risks from cybercriminals who may deceive users into disabling Play Protect, Google's anti-malware feature. Over 50 app developers and marketplaces, including F-Droid and Brave, have expressed concerns about the registration requirements, arguing they could create barriers and raise privacy issues. Google has outlined a one-time process for sideloading apps, which includes enabling developer mode, confirming voluntary sideloading, restarting the device, waiting 24 hours, and using biometric authentication or a PIN to install apps. Google plans to introduce free "limited distribution accounts" for hobbyist developers and students to share apps with up to 20 devices without needing government-issued IDs or registration fees. This process will not apply to installations via the Android Debug Bridge (ADB) and is set to be available in August 2026, ahead of new developer verification requirements. This announcement comes as a new Android malware, Perseus, targets users in Turkey and Italy, with at least 17 distinct Android malware families identified in the past four months.