Failures or omissions in data validation can lead to [[data corruption]] or a [[software security vulnerability|security vulnerability]].<ref>[http://www.cgisecurity.com/owaspsoasp/html/ch10.html Chapter10. Data Validation]</ref> Data validation checks that data are fit for purpose,<ref>[https://web.archive.org/web/20171201042621/https://spotlessdata.com/blog/more-efficient-data-validation-spotless More Efficient Data Validation with Spotless]</ref> valid, sensible, reasonable and secure before they are processed.
