olemus
programmi sisendandmete kõlblikkuse kontroll
=
a systematic check that rejects or accepts input data of a program, based on a set of rules

ülevaateid
https://simplicable.com/new/input-validation

https://en.wikipedia.org/wiki/Data_validation

https://cheatsheetseries.owasp.org/cheatsheets/Input_Validation_Cheat_Sheet.html

näiteid
https://phpsecurity.readthedocs.io/en/latest/Input-Validation.html

https://java2blog.com/input-validation-java/

http://cis1.towson.edu/~cssecinj/modules/cs2/input-validation-cs2-c/