What measures ensure data integrity in web transactions?

Data integrity in web transactions is ensured through encryption, secure protocols, data validation, and backup and recovery procedures.

Encryption is a fundamental measure to ensure data integrity in web transactions. It involves converting data into a code to prevent unauthorised access. Secure Sockets Layer (SSL) and Transport Layer Security (TLS) are commonly used protocols that encrypt data during transmission. They create a secure channel between two machines operating over the internet or an internal network. This ensures that the data sent between these machines is private and integral, thus preventing data tampering and eavesdropping.

Data validation is another crucial measure. It involves checking the data that has been sent and received for accuracy and completeness. This can be done through various methods such as data type checks, range checks, and consistency checks. For instance, a range check could be used to ensure that a user's age entered during a web transaction falls within a reasonable range. If the data does not pass these checks, it is either rejected or the user is asked to correct it. This helps to prevent errors and inconsistencies in the data.

Backup and recovery procedures are also essential for maintaining data integrity. Regular backups ensure that a copy of the data is always available in case of data loss or corruption. Recovery procedures, on the other hand, ensure that the system can be restored to a previous state in case of a failure. This is particularly important for web transactions where data is constantly being updated and changed.

Secure protocols such as HTTPS (Hyper Text Transfer Protocol Secure) are also used to ensure data integrity. HTTPS is the secure version of HTTP, the protocol over which data is sent between your browser and the website that you are connected to. It uses SSL/TLS to encrypt the data, ensuring that it cannot be tampered with during transmission.

In conclusion, data integrity in web transactions is ensured through a combination of encryption, secure protocols, data validation, and backup and recovery procedures. These measures work together to protect the data from unauthorised access, errors, and system failures, ensuring that it remains accurate and consistent throughout the transaction process.