[Verse 1]
Data streams through your application door
Users typing what you've never seen before
Malicious scripts disguised as innocent text
SQL commands that could hijack you next
Trust becomes your biggest enemy
When keyboards become weaponry
[Chorus]
Validate input, encode output clean
Sanitize everything between
Parameters bind your queries tight
Injection attacks lose their bite
Check it, scrub it, make it safe
Input validation saves the day
[Verse 2]
Cross-site scripting hides in comment fields
JavaScript payloads that never yield
Angle brackets carrying toxic code
Through your forms they download their load
HTML entities must be escaped
Before your database gets scraped
[Chorus]
Validate input, encode output clean
Sanitize everything between
Parameters bind your queries tight
Injection attacks lose their bite
Check it, scrub it, make it safe
Input validation saves the day
[Bridge]
Whitelist the good, blacklist won't do
Length limits catch the overflow too
Prepared statements are your shield
Never trust what users yield
Context matters when you encode
Different rules for different modes
[Verse 3]
Email addresses, phone numbers too
Regular expressions help filter through
Database queries need placeholders
Not concatenated text folders
Every single character matters
When security walls start to shatter
[Chorus]
Validate input, encode output clean
Sanitize everything between
Parameters bind your queries tight
Injection attacks lose their bite
Check it, scrub it, make it safe
Input validation saves the day
[Outro]
Secure by design from the very start
Input validation is defensive art
Guard your gates and clean your streams
Protection built into your schemes