8月31日 的 PrivacyGuard - Mobile Security 應用程式分析

PrivacyGuard is a real-time privacy dashboard for Android. It monitors every app on your device for suspicious sensor access, hidden trackers, and risky behaviour — and gives each app a privacy score from 0 to 100. Everything runs on your device. No data ever leaves your phone. ── PRIVACY SCORE ── Every installed app gets a score (0–100) and a grade (A–F) based on the permissions it holds, the trackers it contacts, its network behaviour, and on-device ML analysis. Your overall privacy health is shown as a single score that updates throughout the day. ── SENSOR MONITOR ── PrivacyGuard watches which apps access your camera, microphone, location, contacts, call log, calendar, and clipboard — even when those apps are running silently in the background. Background sensor access triggers an immediate critical alert. ── NETWORK MONITOR ── A local VPN tunnel (100% on-device, nothing routed externally) captures every domain your apps connect to and checks it against a database of 4,700+ known trackers and ad networks from disconnect.me. You see exactly which apps are phoning home, and to whom. ── TRACKER BLOCKING ── Block any domain with one tap. PrivacyGuard injects an NXDOMAIN response so the app never reaches the tracker. You can also cut off an app's entire internet access with the per-app network kill-switch. ── APP RISK SCANNER ── Detects dangerous permission combinations that real spyware uses — silent recording (mic + camera + internet), location stalking (GPS + boot autostart), data harvesting (contacts + upload traffic). Sideloaded apps are flagged automatically. ── ON-DEVICE ML ── Two TFLite models run locally to score each app's behaviour pattern every 15 minutes. No data is sent to any server. The models flag anomalies like unusually high upload ratios, sensor access correlated with network activity, and patterns matching known malware behaviour. ── ACTION CENTER ── A ranked list of the most impactful privacy actions you can take right now — revoke a permission, block a tracker domain, or kill an app's network access entirely. Sorted by severity so you always know what to fix first. ── WEEKLY DIGEST ── A weekly summary of your privacy health — risky apps, trackers contacted, critical alerts, and blocked domains — delivered as a notification every Sunday. ── FULLY ON-DEVICE ── • No account required • No cloud sync • No analytics or telemetry • No ads • Works completely offline • All data stored in private app storage, deleted on uninstall PrivacyGuard is built for people who want to know what their apps are actually doing.