The Complete Privacy Audit: Secure Every Device You Own

A comprehensive privacy audit systematically examines every device, account, and data flow in your digital life to identify and close vulnerabilities. Most people have never done one, which means their digital security reflects years of default settings, forgotten accounts, and accumulated permissions. This guide walks through a complete audit process for phones, computers, browsers, accounts, and network infrastructure.

Start with your smartphone — it is the device with the most sensors, the most permissions, and the most intimate access to your life. On both iOS and Android, navigate to privacy settings and review every permission category: location, camera, microphone, contacts, photos, health data, and Bluetooth. For each app, ask: does this app need this permission to function? If not, revoke it. Set location permissions to "While Using" for all apps except navigation. Disable "Precise Location" for apps that do not need meter-level accuracy — weather apps work fine with approximate location.

Audit your phone's installed apps. Delete any app you have not used in 30 days. Unused apps still have permissions, can receive background data, and expand your attack surface. For apps you keep, check whether they offer granular privacy settings within the app itself. Social media apps typically have dozens of internal privacy toggles that default to the least private option. Review each one.

On your computer, the audit begins with your browser. Check installed extensions — each extension has access to some or all of your browsing data. Remove any extension you do not actively use. For remaining extensions, review their permissions in the browser's extension management page. Install uBlock Origin for ad blocking, HTTPS Everywhere for encrypted connections, and consider Privacy Badger for tracker blocking. Set your browser to clear cookies on exit or use containers (Firefox Multi-Account Containers) to isolate sites.