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Data Validation
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Q1Easyvalidationbackendsecurity
What is data validation?
Q2Easyfrontend-validationbackend-validationsecurity
Why is backend validation necessary even if frontend validation exists?
Q3Easysanitizationvalidationsecurity
What is the difference between validation and sanitization?
Q4Mediumschema-validationapibackend
What is schema validation?
Q5Mediuminput-validationsecuritysql-injection
How does proper validation help prevent SQL injection?
Q6Mediumregexvalidationbackend
How are regular expressions used in data validation?
Q7Hardwhitelist-validationblacklist-validationsecurity
What is the difference between whitelist and blacklist validation?
Q8Hardvalidation-layersbackend-architecturesecurity
Why should validation exist at multiple layers of an application?
Q9Hardfile-validationupload-securitybackend-security
Why is file upload validation important?
Q10Hardbusiness-validationbackendapplication-logic
What is business rule validation?