Zip files are a fast and easy option when you want to protect files from being accessed by casual users. While the technology behind them is quite old, and they don’t have the security required to protect extremely sensitive information, they’re great for compressing and sharing large
amounts of data in easy-to-transport folders. The essential technology behind zip files has been around for decades. You gather your files and folders together, select a password, encrypt them, and they’re put in a single, compressed folder. When someone wants to access the contents inside, they just have to enter the password. Before using zip files, however, there is one thing you need to keep in mind: anyone can crack
open a zip file if they have the motivation to do so. They just have to download the right (free) software. There are two levels of security on a password-protected zip file: the encryption security and the password. There are currently two standard levels of encryption for zip files, 128 and 256 bits, with 256-bit encryption
far superior to the 128-bit version. Fortunately, the major zip utilities support this level of encryption. Encryption is just part of the equation. The other part is the strength of your password. Cracking the password on a zip file is a lot easier than cracking the password on a web server or an email server. Servers have safeguards in place so that if someone is trying to use a brute force attack to crack the password, the network admins can take corrective measures
to stop the attack. That’s a lot different from someone who has a zip file in their personal possession. They can put it on their own computer and then they have all the time in the world to work on it, without detection or interruption. Just as importantly, there is no such thing as two-factor authentication for zip files. When someone does get the password, they have access to the file — and you will never know about it. Windows 10 has a native utility for making Zip folders, but it doesn’t have an option for password protection. To set a password on your zip files, you’ll need to get a third-party app. There is a way to encrypt folders on Windows 10 (except the Home edition) using EFS (Encrypted File System), but these aren’t zip files, and there are three big problems with this method:
Using WinZipWinZip is a very popular app for password-protecting zip files. You can download and install WinZip for free for a few weeks before you’re asked to pay for it. Once you’ve installed the software, password-protecting your files is a three-step process:
Using WinRARWinRAR is another popular utility that offers a free trial period. Setting a password is also very easy. First, download and install WinRAR. When you open WinRAR, it displays a list of files and folders. Navigate to the ones you want to zip up and click the “Add” button for each one. Alternately, you can right-click files on your computer and select “Add to Archive” to launch WinRAR. Select the Zip format and click the “Set Password” option. When you click “OK,” the app will zip and password-protect the files you selected. Using 7-ZipA third option is 7-Zip. It’s also very popular and is free during the trial period.
Password-Protect Zip Files: Mac OS XMac computers have their own program for creating zip files, but there’s no option to add a password. To create unprotected zip files, open Archive Utility, then go to Preferences and change the archive format to zip. On a Mac computer running MacOS Big Sur or later, you can use Terminal to quickly create a password-protected zip file. To make navigating around Terminal easier, find the folder containing the documents you want to compress and drag them onto your desktop. Terminal is located in the Utilities folder in Finder. To open it quickly, launch Spotlight by pressing Cmd-Space, type “terminal” in the search field that opens and press Return. Once Terminal is open, type “cd Desktop/” and press Enter. This changes the command-prompt location to your desktop. There are four components to the command you will use in Terminal:
For example, if you’re creating a zip file called info.zip from two files called info1.docx and info2.docx, the command you would type is: zip -er info.zip info1.docx info2.docx There are no extensions on folders, so if you’re zipping folders, just use their names. For example, if the folder’s name is Folder1, then you would use: zip -er info.zip Folder1 Zipping Files With Less TypingHere’s a tip a lot of Mac users don’t seem to know: Terminal supports dragging and dropping. While it’s important to understand the mechanics behind the zip command in Terminal, you don’t actually need to use it. Just type the beginning of the zip command, including the file you want to create, then add one space. Then drag your files and folders from the desktop into the Terminal window and press the Return key. Make sure the files you are zipping are all in the same folder on your desktop; otherwise the contents in the zip file will be put in a series of nested folders mirroring the architecture of your Mac’s storage. After you enter your password, the zip file will appear on your desktop, regardless of where your source files came from. So your commands will be:
Now enter one space, then drag your files into Terminal and press Enter. After you type your password and confirm it, the new zip file will appear on your desktop. Securing Files With a Document Management SystemThere are a few good reasons why companies that need to protect confidential information use a secure document management system rather than relying on zip files. One is that it’s easier to use. Instead of zipping up individual files and setting passwords for each one, using a secure document management system takes just four steps:
If you want to change permissions for a specific user or group of users, you can do so with just a few clicks. If someone doesn’t require access anymore, you can revoke their access immediately. The files are all stored securely using state-of-the-art encryption and, just as importantly, two-factor authentication. Getting started with a Caplinked document management system is just as easy as downloading a zip utility, and it also comes with a free trial. David Weedmark is a published author and e-commerce consultant. He is an experienced JavaScript developer and a former network security consultant. Linked Sources: https://resources.infosecinstitute.com/topic/encrypted-file-system-efs-in-windows-10/ https://www.winzip.com/win/en/downwz.html https://www.win-rar.com/download.html?L=0 https://www.7-zip.org/ https://www.techjunkie.com/password-protect-zip-macos/ https://www.canr.msu.edu/news/encrypted-zip-mac https://windowsreport.com/password-protect-zip-file/ https://www.cyberscoop.com/zip-files-encryption-security-wyden-nist/ https://passper.imyfone.com/zip/how-to-crack-zip-file-password-with-cmd/#:~:text=2.1%20Crack%20ZIP%20File%20Password,%2F8%2F7%2FVista. Do Zip files have passwords?Can you put a password on a zip file? Windows doesn't have an option to protect your zipped file with a password, so there's no other way but to use third-party tools. You can choose from various trusted software options, such as WinZip, WinRAR, and 7-Zip.
Why can't I password protect a zip file?Windows 10 only offers a way to encrypt a zip file, not password protect it. So, to password protect a zip file on Windows 10, you need a third-party app that runs on Windows. An example of such a third-party app is WinRAR.
How do I add a password to a zip file?Right-click on the Zip file you wish to password protect. Choose WinZip. Click Encrypt. WinZip will ask for a password and then encrypt all files currently in the Zip file.
How do I encrypt a zipped folder?Right-click (or press and hold) a file or folder and select Properties. Select the Advanced button and select the Encrypt contents to secure data check box. Select OK to close the Advanced Attributes window, select Apply, and then select OK.
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