Preventing a Mac computer from getting hacked is easy. All you need to do is to navigate to the System Preferences, then to Security & Privacy and to the Firewall.

By default the Mac Firewall is not active. You may find it turned off when you visit this place for the first time. No one knows Apple’s purpose behind leaving it inactive by defaults.

Well, you turn the Firewall On and you are all good to go. This is the first stet to prevent incoming invasion or remote Mac data hijack when you are in the same network a hacker is baiting on our ignorance.

Once the first preventative measure is taken, you can take extended measures as well to strengthen Firewall even further. All you will need now is to select everything your Mac Firewall section has to offer. This ensures that your Mac is private and doesn’t even acknowledge any incoming connections except the most required network connections it will need to keep you up and running over the Internet.

Trust Gatekeeper, have faith in it and allow it to work for you.

By now, many Mac users are aware of Gatekeeper. It is a weird name but make an abundant sense in keeping your Mac protected. It is hyper active and works as a watchdog over all application getting installed for the first time. Every new macOS comes the Gatekeeper built In.

If you do not know it or have not encountered it yet by its color, shape or size, but you might have already interacted with its warnings. Remember when you had to come across a window prompting a warning message that whether you would like to allow an app to open the first time after it has been downloaded from other sources than App Store? That’s right. That’s the Gatekeeper thing you just had encountered.

Long story short, Gatekeeper prevents any application to reside and silently operate without your exclusive permission. In other words, no application will have ever a room in your Mac without Gatekeeper knowing it. If Gatekeeper does not know an App, it will warn you whether you know it better and can trust with your whole heart and have faith in it.

Gatekeeper’s deepest interest in running a Mac as safe as it should be is just an awesome idea Apple smartly integrated to macOS. Just don’t make a habit of hastily clicking on the ALLOW button on random basis. Pay attention to Gatekeeper’s warning. Always get a second thought prior to hitting Allow. Only allow an app to open for the first time when you are aware of the nature of the app and you are asking Gatekeeper to trust. Allowing an app to open for the first time will also allow such app to operate anyway it is designed to operate. Therefore having a clear picture of what the app is and where it is from helps keep your Mac and its data secure.