Free CompTIA Security+ SY0-701 Practice Question

Input validation is the process of ensuring that a program operates on clean, correct and useful data. It uses rules to check for data correctness, meaningfulness, and security before the data is input into the system. This can prevent various forms of data manipulation attacks, such as SQL injection, buffer overflow, and cross-site scripting. Other options given are also important for application security but do not directly involve the verification of data input against specific criteria to ensure data is formatted correctly before it is processed.