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File Encryption: How to Protect Your Data


Osborn Walter

Jul 11, 2023 | 5 min read
  • Online threats

In the age of the internet, our data faces various threats such as hacking attacks, malware, data breaches, and more. To safeguard our privacy and security, we need to encrypt our files, making them inaccessible or unreadable to unauthorized individuals.


What is File Encryption?


File encryption is a technique that transforms the content of a file into an unreadable form, which can only be decrypted and viewed by those who possess the correct key or password. File encryption prevents data theft or tampering, preserving the integrity and confidentiality of the files. There are two main types of file encryption: symmetric encryption and asymmetric encryption. Symmetric encryption uses the same key for both encryption and decryption, while asymmetric encryption employs a pair of public and private keys for encryption and decryption. Symmetric encryption is faster but requires secure transmission and storage of the key, whereas asymmetric encryption does not require key transmission or storage but is slower.


Why is File Encryption Necessary?


File encryption can help protect our data from several threats:

① Hacking Attacks

Hackers may infiltrate our devices or networks through various means, attempting to steal or manipulate our files. If our files are encrypted, hackers cannot read or modify them unless they can crack our password or key.

② Malware

Malware is software designed to perform malicious operations on our devices, such as deleting, copying, modifying, or locking our files. If our files are encrypted, malware cannot affect them unless it obtains our password or key.

③ Data Breaches

Data breaches occur when unauthorized individuals or organizations gain access to or disclose our data. This can result from our own negligence, third-party service provider errors, insider betrayal, or other causes. If our files are encrypted, data breaches cannot expose our information unless the perpetrators can decrypt our password or key.


How to Encrypt Files?


There are several methods to encrypt files. Here are some commonly used tools and steps:

① Windows BitLocker or Mac FileVault

Use Windows BitLocker or Mac FileVault to encrypt the entire hard drive, automatically encrypting and decrypting all your files. You only need to set a password or PIN and enter it during each boot-up. This method protects your device from unauthorized access if it is lost or stolen.

② Compression Software

Use compression software like 7-Zip or WinRAR to encrypt individual files or folders, allowing selective encryption and decryption. Add your files to an archive and set a password. This method protects your files from unauthorized access during transmission or storage.

③ ncryption Software

Utilize encryption software such as VeraCrypt or AxCrypt to encrypt individual files or folders, creating a virtual encrypted disk to store your files. Create an encrypted disk and set a password. This method protects your files from unauthorized access when hidden or shared.


How to Ensure Data Security with MetroVPN?


MetroVPN is an excellent VPN service that helps you maintain anonymity and security on the internet. A VPN, or Virtual Private Network, establishes an encrypted tunnel between you and the target website, preventing your network traffic from being tracked or intercepted. Using MetroVPN can help you achieve the following goals:

① Hide Your Real IP Address and Location

Prevent identification or tracking by websites, advertisers, governments, or other individuals.

② Access restricted content

Access any websites and content you desire, such as Netflix, YouTube, Facebook, etc.

③ Encrypts network activity

Prevent eavesdropping or tampering of your data, such as emails, chat conversations, file transfers, etc.


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