Say it like this
- We need to implement input validation on the form.
- Did you add input validation before sending it to production?
- Lack of input validation led to the security breach.
Use it at work
Code review
- We need input validation on this form.
- Validate the input on the server, not just the client.
Security
- Missing input validation led to the SQL injection bug.
- Let's validate file types before upload.
Testing
- Add tests for empty and very long inputs.
- Input validation should return a clear error.
Don't say this
Avoid using just 'validated' without context. Use the full term 'input validation' for clarity in tech discussions.
Practice
Try it
4 quick exercises
1. We discovered a security vulnerability because the API was missing _______ on the user ID parameter.
2. What would a developer say in a code review?
3. Which statement about input validation is incorrect?
4. Rewrite this in natural tech English: 'Before we use the data, we should check that it is correct and safe.'
Say it out loud
Phrase 1 of 3
"We need to implement input validation on the form."
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More about input validation
Real examples(3)
- in a standup
"I finished input validation for the registration endpoint yesterday and it caught several malformed email addresses."
- in a code review
"You should add input validation here to check that the user ID is a positive integer, not a string."
- in a team meeting
"Our security audit revealed missing input validation on three API endpoints, so we have to fix that before the release."
More mistakes(2)
Handle with care. Do not confuse with data validation (broader). Input validation specifically checks user-entered data before processing.
- ✕Input validation and data validation are the same thing.✓Input validation checks user-entered data; data validation is broader and includes checking data from any source.
Input validation is a specific type of data validation focused on external user input.
- ✕We do input validation on the client side only.✓We do input validation on both the client side and server side.
Client-side validation alone is insufficient because it can be bypassed. Always validate on the server too.
Other forms(3)
- input validation noun
"Input validation is essential for security."
- validate input / implement input validation verb
"We need to validate input before processing the request."
- input validation rules / input validation checks adjective
"The input validation rules rejected the phone number because it contained letters."
Often used with(5)
- implement input validation · Used when adding validation to code or systems
- input validation checks · Refers to the specific rules or tests that verify data
- input validation layer · The part of the system responsible for checking incoming data
- server-side input validation · Validation performed on the backend, considered more secure
- input validation rules · The specific criteria or requirements that data must meet
Similar words(3)
- data validation · Broader term covering all data checking; input validation is a subset
- sanitization · Related but different; sanitization cleans data, validation checks it
- verification · Similar but less technical; validation is the preferred term in software engineering
Opposites(3)
- unvalidated input
- bypassing validation
- no validation
Questions(5)
- What does input validation mean in software engineering?
- Input validation is the process of checking that data entered by users or external systems meets specific requirements before the application processes it. It ensures data is in the correct format, within acceptable ranges, and safe from malicious use.
- Why is input validation important?
- Input validation is crucial for security and data integrity. Without it, attackers can inject malicious code (like SQL injection or XSS), cause the application to crash, or manipulate data. It also prevents errors from invalid data reaching your system.
- Should input validation happen on the client or server?
- Both are important, but server-side input validation is essential for security. Client-side validation provides a better user experience, but it can be bypassed. Always validate on the server to protect against attacks.
- How do you use input validation in a sentence at work?
- Example: "We need to add input validation to the email field to prevent invalid addresses from being stored." or "The input validation on line 42 is checking the user ID correctly."
- Is input validation formal or informal?
- Input validation is a neutral, technical term used in both formal and informal workplace discussions. It is appropriate for code reviews, meetings, documentation, and casual conversations with colleagues.
