“irgvctxmsr” – sounds like gibberish, doesn’t it? But if you were to decrypt this string using a mono-alphabet shift cipher where each letter has been shifted to the right by 4 numbers, you would see that it spells “encryption”!

Protecting critical data and information by encrypting them was first performed by Julius Caesar in 120 BC. The art of encryption has been through several modern shifts, and currently most of the data on the internet is protected using sophisticated encryption algorithms like AES (Advanced Encryption Standard), RSA (Rivest-Shamir-Adlemen), ECC (Elliptic Curve Cryptography) and PGP (Pretty Good Privacy).