when your data is encrypted , even if an unauthorised person or entity gains access to it & they will not able to read it, also it helps to protect private information, sensitive data and can enhance the security of communication between client apps and servers, and specially commutation on internet will more secure any body want to read or overwrite on data if is not possible unencrypted data because encrypted date there is kay and encryption algorithms are there without knowing key and algorithm no can read or do changes on that so encryption is must important in security
