Over the years, Apple has put its vast resources into making it's operating systems more secure for end-users. In macOS Catalina, the company has taken this to all-new levels by introducing beneficial security changes that make it even harder for miscreants to play havoc with our computers. However, because security is a tricky business, so-called improvements for some might not work for others. Specifically, Apple's decision to make Gatekeeper even more difficult crack is a significant step forward for everyday Mac users. For developers, perhaps not so much. Luckily, there's a workaround.

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Warning: This terminal trick disables important security aspects of Gatekeeper, which leaves your Mac vulnerable to malware. We highly recommend you reinable the default security settings if you chose to follow this guide at your own risk.

What is Gatekeeper?

Gatekeeper has been an essential part of macOS for years. As its name suggests, the tool has been designed to check recently downloaded apps for known malware and sends it to quarantine. In his June article, The Great Mac Balancing Act, Rene Ritchie explains:

Currently, when you download an app, whether it's off the Store or the Web or even from AirDrop, that app is quarantined. If and when you try to open a quarantined app, Gatekeeper checks it for known malware, validates the developer signature to make sure it hasn't been tampered with, makes sure it's allowed to run, for example matches your settings for App Store apps and/or known developer apps, and then double checks with you that you really want to run the app for the first time, that it's not trying to pull a fast one and autorun itself.

Until now, Gatekeeper didn't take the same approach with apps launched via Terminal. It also didn't check non-quarantined apps and files for malware. In other words, it checked an app only once for malware.

Significant changes have arrived with macOS Catalina.

Now, apps started through Terminal are also checked. These files get the same malware scan, signature check, and local security policy check. The difference: even on the first run, you only need to explicitly approve software launched in bundles, like a standard Mac app bundle, not for standalone executables or libraries.

With macOS Catalina, perhaps more significantly, Gatekeeper will also check non-quarantined apps and files for problems. Not just once or twice, but every time you run it. When your Mac detects a problem, it blocks the file, then sends you an alert.

If all this sounds fantastic to you, terrific. That's undoubtedly Apple's intent. However, some developers might view this differently and find the changes cumbersome, at best.

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A Workaround

Even though Gatekeeper in macOS is now stricter than ever, there is a way around it -- including macOS Catalina's newest tools. The workaround makes it possible to download and use apps downloaded from anywhere on macOS Catalina and earlier versions without a check.

First published in 2016 by OSX Daily, but still valid, the 'fix' works like this:

1. Be sure to exit System Preferences on your Mac.
2. On Finder, click Go.
3. Select Utilities.

4. Double-click Terminal.

5. Type of the following command syntax: sudo spctl --master-disable .
6. Hit Return
7. Authenticate with an admin password.
8. Hit Return.
9. Exit Terminal.

Changing your settings

Now, it's time to allow your Mac to open any app.

1. Click on System Preferences on your Mac Dock.
2. Choose Security & Privacy.

3. Tap the lock at the bottom left of the screen.

4. Enter your password to unlock Security and Privacy.
5. Choose the Anywhere under Allow apps downloaded from. Prior to making the change, this option wasn't available.

6. Click the unlocked lock to keep the change.

With this change, Gatekeeper no longer monitors your computer for malware coming from apps and files.

Restoring to the original setting

If you'd like to return to the default Gatekeeper settings, perform these steps:

1. Be sure to exit System Preferences on your Mac.
2. On Finder, click Go.
3. Select Utilities.

4. Double-click Terminal.

5. Type of the following command syntax: sudo spctl --master-enable .
6. Hit Return
7. Authenticate with an admin password.
8. Hit Return.
9. Exit Terminal.

View the change

To confirm your Mac has returned to the default settings:

1. Click on System Preferences on your Mac Dock.
2. Choose Security & Privacy.

Under Allow apps downloaded from, notice the select is now App Store and identified developers.

Should you make this switch?

For nearly every Mac user, there's no reason to make the listed change under Security & Privacy on macOS Catalina. It should only be performed if you can quickly determine whether apps are legitimate or not. Keep this in mind.

Questions?

If you have any questions or concerns about Gatekeeper or the rest of the macOS Catalina update, let us know in the comments below.

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Get a secure archiver app

All of us from time to time receive digital archive packages, whether they are downloaded online or get sent over by our friends. Occasionally, we might be even packaging and distributing archives ourselves. But few of us stop and think why exactly do we do this.

In general, archives help us achieve two essential goals: decrease file size and unite a group of files into a single package. The first goal relies heavily on a compression algorithm and thus differs from format to format, whereas the second goal is equally achievable by all popular archivers on the market.

There are literally dozens of archiving formats in existence, but it’s likely that you’ll only ever meet two: ZIP and RAR. ZIP has been around for more than 30 years and is easily readable by your Mac’s default archiving utility. RAR, on the other hand, is a proprietary archiving format that requires a RAR opener for Mac to operate. So how do you open .rar on Mac?

Quickly Open RAR Files On Mac

Unfortunately, you can’t open a RAR archive with Mac’s default tools due to the format’s closed proprietary nature. RAR itself is an acronym for Roshal Archive, as it was developed by a Russian software engineer Eugene Roshal.

In terms of usability, RAR is not as popular as ZIP, but offers a better compression algorithm and, most importantly, works with large files. While ZIP taps out at around 2 GB, RAR can take up to 8 EiB (the number so large it’s practically infinite). The price you pay is having to find and download a sort of WinRAR for Mac utility.

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Start with a well-known RAR extractor for Mac

While the actual WinRAR for Mac doesn’t exist, as it only works on Windows, there is no shortage of archivers that support RAR files.

An example that comes to mind immediately when someone thinks of how to zip a file on Mac is Unarchiver.

Unarchiver is a free simple tool that lets you, well, unarchive hundreds of file formats, including RAR. Originally developed by Dag Agren over 10 years ago, it quickly gained millions of users due to its unobtrusive interface and fast performance. To open .rar on Mac with Unarchiver:

1. Download the app and place it in the Applications folder
2. Right-click on the archive you need to unpack and choose Open With > The Unarchiver
3. The files will unpack in the same folder

Due to its simplicity, however, Unarchiver omits a lot of features. For instance, it doesn’t itself compress files and doesn’t allow to set passwords or peek inside the zipped folder. So if you’re working with archives on a regular basis, it’s much better to use an actual full-featured unarchiver for Mac.

Use a pro-level Mac unarchiver

When you need to do more than simply find out how to unzip files on Mac, you need to use apps that were designed with all the extra functionality in mind. One of those apps is Archiver.

Archiver can easily open RAR files on Mac, but also create new archives, compress them, encrypt them, and split them into multiple volumes.

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Starting with Archiver is a no-brainer due to its intuitive drag-and-drop interface:

1. Launch Archiver from Applications
2. Drop your RAR archive right onto the app’s window
3. You’ll see all the files in the archive. Optionally, you can just drag some of the files onto your Desktop even without unarchiving.
4. To open .rar on Mac, simply choose Extract, select the destination, and then click Done

Alternatively, if you want to create a RAR archive:

1. Drop files onto the Archiver window and click Archive
2. Choose RAR out of the formats offered. Select the name and compression level.
3. Optionally check the Encrypt box and set a password for your archive
4. Click Archive

Another neat Archiver feature is the ability to split your archives into multiple volumes. This is handy when you need to send a large file, like a movie, over email. To do that, simply choose Split when adding your archive to the app and select the appropriate size for each resulting archive.

Build your unarchiving workflow

Without a doubt, Archiver significantly expands on the functionality of the Unarchiver. But it’s still mostly suited for one-off files and archives. If your line of work requires you to use archives on a daily basis, you need a RAR opener for Mac that supports presets, such as BetterZip.

BetterZip is a robust Mac unarchiver that supports all the same functionality when compared to Archive, with one significant distinction — preset workflows.

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With BetterZip, it’s easy to create complex action sequences for all kinds of archives and process dozens of them in seconds. To create your own preset with BetterZip:

1. Go Preferences > Presets
2. Explore the saved presets in Extract and Saved
3. Add new ones by clicking the plus sign

To use a preset, simply drop the files onto BetterZip and then click and hold either Save or Extract button in the top menu to select one of the available options.

Zip and unzip files with ease

Now you that know how to unzip a file on Mac and even create your own archiving presets, you can enjoy the benefits of archiving files more often. It’s generally a good idea to archive files whenever you send them, sort of like putting your parcel in a safe package before going to the post office in real life. Best gmail app for mac.

Archived files are less susceptible to errors and damage, and more likely to arrive to your recipient in mind condition: especially when it concerns folders with multiple files and media, such as movies and music.

Use a full-featured RAR extractor for Mac that executes the archiving tasks quickly and gives you many more archiving options overall. Whether you choose Archiver or BetterZip, how to open RAR files on Mac, or in fact any files, won’t be a problem anymore.

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Best of all, both Archiver and BetterZip are available for you to try free on Setapp, a platform of more than 150 top Mac apps that solve any problem you happen to come across. Pack your files and send them away!