The best way to keep your files private and safe from the eyes of others is to use encryption. It is used by the military, NSA, FBI, US State Department, banks, stock brokers, police departments, whistleblowers, arms dealers, and others to keep their secrets safe from those who wish to spy on them. Encryption keeps my secrets safe and can do the same for you.
According to Wikipedia at https://en.wikipedia.org/wiki/Encryption:
“In cryptography, encryption is the process of encoding messages or information in such a way that only authorized parties can read it. Encryption does not of itself prevent interception, but denies the message content to the interceptor. In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. It is in principle possible to decrypt the message without possessing the key, but, for a well-designed encryption scheme, large computational resources and skill are required. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients, but not to unauthorized interceptors.
“The purpose of encryption is to ensure that only somebody who is authorized to access data (e.g. a text message or a file), will be able to read it, using the decryption key. Somebody who is not authorized can be excluded, because he or she does not have the required key, without which it is impossible to read the encrypted information.”
AES Crypt is a file encryption software available on several operating systems that uses the industry standard Advanced Encryption Standard (AES) to easily and securely encrypt files.
You do not need to be an expert to use AES Crypt, nor do you need to understand cryptography. When using Windows, the only thing you need to do is right-click on a file, select AES Encrypt or AES Decrypt, enter a password, and AES Crypt will do the rest. On a Mac, you can drag a file to the AES Crypt program and provide the required password.
Using a powerful 256-bit encryption algorithm, AES Crypt can safely secure your most sensitive files. Once a file is encrypted, you do not have to worry about a person reading your sensitive information, as an encrypted file is completely useless without the password. It simply cannot be read.
AES Crypt is the perfect tool for anyone who carries sensitive information with them while traveling, uploads sensitive files to servers on the Internet, or wishes to protect sensitive information from being stolen from the home or office. AES Crypt is also the perfect solution for those who wish to backup information and store that data at a bank, in a cloud-based storage service, and any place where sensitive files might be accessible by someone else.
Best of all, AES Crypt is completely free open source software. The developers do accept donations but the software never asks for payment.
AES Crypt is available at no charge at https://www.aescrypt.com/.