The popular belief is that Macs are secure—at least more secure than Windows. While macOS does include some genuinely strong built-in protections, this line of thinking can make Mac users less careful about privacy and security.
And no amount of built-in protections can make up for critical human errors, which contribute to 60% of all data breaches according to Verizon’s 2025 Data Breach Investigations Report.
So if you’re a Mac user, it’s worth double-checking whether you’re making these oversights.
Skipping Software Updates
Let’s start with the easiest thing to fix: always downloading Apple’s software updates. Almost every Apple update includes security patches that fix system vulnerabilities. Since attackers typically rely on exploiting these vulnerabilities, running outdated software is somewhat like leaving a door unlocked.
The solution is to simply turn automatic updates on. Go to the Apple Menu > System Settings > General > Software Update. Then set it to “Download new updates when available.”
Set it, forget it, and now you have one less thing to worry about.
Leaving the Mac Firewall Turned Off
Another important security option you should take the ten seconds to tick: enabling macOS’s firewall. It’s off by default on some Macs, and many people never turn it on.
Disabling—or simply never enabling—a built-in security tool is exactly the kind of preventable oversight that contributes to those breach statistics. The firewall prevents unwanted contact initiated by other computers when you’re connected to the internet.
Enable it under System Settings > Network > Firewall. It takes about ten seconds.
Using Weak or Reused Passwords
If having outdated software is akin to leaving the door open, using weak passwords for your email, bank, or iCloud accounts is like using tape to lock the door.
Unfortunately, most people use their name, birthday, or other easily-guessed information as their password. Worse, people often use the same or similar passwords for different accounts. This means that if one account gets breached, the others are at risk as well.
The good thing is that macOS has a built-in password manager: iCloud Keychain. Not everyone uses it, but if you’re not already managing multiple unique passwords, it’s well worth it.
Not Enabling Two-Factor Authentication
With how clever attackers are getting, however, sometimes a strong password alone isn’t enough. Make sure to use two-factor authentication (2FA) as well if you don’t already.
It adds a second layer of protection by requiring you to approve a login from another trusted device by putting in a one-time code.
Go to System Settings > [Your Name] > Sign-In & Security and confirm two-factor authentication is on. Then extend the habit to your email, banking apps, and any other account that offers it.
Ignoring App Location Permissions
Apps ask for location access, and most people tap “Allow” without thinking. But some apps have no good reason to know where you are, and even legitimate ones don’t always need to track your location constantly.
Head to System Settings > Privacy & Security > Location Services. Here, you can see every app that has requested access and adjust each one individually.
Most apps don’t need to track your location “Always”—turn them all to “While Using” instead.
Not Reviewing iCloud Sharing Settings
iCloud is deeply woven into macOS, which is great for convenience and not always great for privacy. Features like iCloud Photos, iCloud Drive, and Shared Photo Library can share more than you realize, especially if family members are on the same account or an old device is still signed in.
Go to System Settings > [Your Name] > iCloud and see what you have enabled. Check which apps have access and think critically about whether each one actually needs it. Chances are that some apps there don’t.
Connecting to Public Wi-Fi Without Protection
If you regularly connect to public Wi-Fi in coffee shops, airports, or hotel lobbies, you need to use extra protection. These networks typically lack the robust protections of a private home network, making it easier for bad actors to intercept your data. This means that logging into your bank or work accounts is a big no-no while using them.
It’s highly recommended to use a VPN for Mac when using public Wi-Fi. It adds extra protection by encrypting your connection, ensuring your browsing activity stays private even when the network itself isn’t.
Forgetting About Browser Privacy Settings
Safari, Mac’s default browser, has solid stock privacy settings. Still, it’s worth double-checking if the right options are on. An important one is having “Prevent cross-site tracking” enabled. You can see under Safari > Settings > Privacy.
It becomes even more important to adjust your browser’s privacy settings if you use Google Chrome or Firefox, which are notorious for tracking and data collection.
The Bottom Line
There’s a good chance that you’re guilty of at least some of these mistakes. The good news is that all these can be rectified in less than an hour.
Ticking some options in the settings, changing your passwords, setting up 2FA, and getting a reliable VPN—these can all be done without technical expertise. And they go a long way to protecting your privacy.
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