What you'll learn

Postel's law, insecure defaults, and even our human desire to be helpful and accommodating are all places where hackers can use unvalidated input to attack your system. In this course, User Input Validation for Java Applications, you'll learn to validate untrusted user input. First, you'll explore unbounded input. Next, you'll discover the difference between allowlisting, blocklisting, and sanitation. Finally, you'll learn how to safely deserialize data against a schema. When you're finished with this course, you'll have the skills and knowledge of secure coding needed to protect your system against malicious input.

https://www.pluralsight.com/courses/secure-coding-input-validation-java