NetMute1. The Privacy & Security pane: audit who has access
Open System Settings > Privacy & Security. This pane lists every app granted sensitive access. Go through each category and revoke anything you do not recognize or no longer use. - Location Services — review which apps see your location. macOS Tahoe now shows recent access, so you can spot an app checking far more often than it should. Disable the ones with no reason to need it. - Camera and Microphone — only video, conferencing, and recording tools belong here. If a note app appears, ask why. - Screen & System Audio Recording — anything here can capture your screen. Keep the list short. - Accessibility and Full Disk Access — the most powerful permissions on the Mac. An app with either can read almost everything. Grant only to tools you fully trust. - App Management — controls which apps can update or delete other apps. Treat it like Full Disk Access. The tradeoff is friction: revoke too much and some features stop working, but you will be re-prompted the moment an app genuinely needs access.
2. Stop tracking and personalized ads
These settings cut off the data Apple and third-party apps use to profile and advertise to you. Each is low-risk to disable. - App Tracking Transparency — in Privacy & Security > Tracking, turn off Allow Apps to Request to Track. Apps can no longer even ask to follow you across other companies' apps and sites. Tradeoff: essentially none. - Apple Advertising — in Privacy & Security > Apple Advertising, turn off Personalized Ads. You still see ads in Apple's apps, just not ones targeted using your data. - Analytics & Improvements — in Privacy & Security > Analytics & Improvements, turn off Share Mac Analytics and Share with App Developers. Tradeoff: your crash data no longer helps improve macOS. - Safari privacy — in Safari > Settings > Privacy, keep Prevent cross-site tracking on and enable Hide IP address from trackers. In Advanced Settings, set fingerprinting protection to all browsing, now the Tahoe default. - Mail Privacy Protection — in Mail > Settings > Privacy, turn on Protect Mail Activity to hide your IP and stop senders knowing when or whether you opened an email, defeating tracking pixels.
3. Lock the device down
These settings protect your data if your Mac is lost, stolen, or targeted directly. - Firewall — in System Settings > Network > Firewall, turn it On to block unsolicited incoming connections. For stricter control, click Options and enable Block all incoming connections, then turn on Stealth Mode so your Mac ignores network probes. Tradeoff: local services like file sharing need exceptions. - FileVault — in Privacy & Security > FileVault, turn it On to encrypt your entire disk, so a thief cannot read your files. Store the recovery key safely. Tradeoff: lose both password and key and the data is gone for good. That is the point. - Lockdown Mode — in Privacy & Security > Lockdown Mode, for high-risk users (journalists, activists, executives) facing targeted spyware. It sharply cuts attack surface. Tradeoff: significant, many features and sites break, so most people should leave it off. - Find My — in System Settings > [your name] > Find My, enable Find My Mac to locate, lock, or erase a lost Mac remotely. Tradeoff: minimal, and well worth it.
4. Network and iCloud privacy
These features shrink how much your network activity reveals about you, mostly for iCloud+ subscribers. - iCloud Private Relay — in System Settings > [your name] > iCloud > Private Relay (needs iCloud+). It routes Safari browsing through two relays so neither Apple nor your network provider sees both who you are and which sites you visit. Tradeoff: Safari only, can slow connections, and may break sites needing your real region. - Hide My Email — also iCloud+. When signing up, use Sign in with Apple and choose Hide My Email to generate a unique forwarding alias. If that service leaks or spams you, disable one alias instead of changing your real address. Tradeoff: more aliases to manage. - Encrypted DNS — for an extra layer, configure DNS over HTTPS via a privacy-focused resolver so the names of sites you visit are not sent in plain text on your network. macOS supports this through configuration profiles. Tradeoff: some setup, and you trust your chosen resolver instead of your ISP.
5. What these settings miss, and the bottom line
Work through the checklist and your Mac is meaningfully more private: permissions are tight, tracking is off, the disk is encrypted, the firewall is up. But there is a real gap. macOS privacy settings govern two things well: what apps are *allowed* to access (camera, files, location) and what Safari *trackers* can do. What they do not show is what your installed apps quietly send over the network once running. A granted permission says an app *can* use your microphone; it says nothing about which servers it phones home to, how often, or what it ships in the background. The built-in firewall blocks *incoming* connections, not the *outgoing* ones your apps make freely. That is the blind spot. To see and control outbound traffic per app, you need a connection monitor. NetMute is a macOS app that shows every connection your apps make in real time and lets you block the ones you do not want. It is a one-time purchase with a free trial, so you can watch what your Mac is actually talking to first. Pair it with this checklist and you cover both halves: what apps can access, and where your data actually goes.
