Sanitization
Sanitization is a security practice in software development that involves cleaning or filtering user input to remove potentially harmful content, such as malicious code or unsafe characters, before processing or storing it. It is a critical defense mechanism against attacks like cross-site scripting (XSS), SQL injection, and command injection by ensuring data is safe for its intended use. This process typically involves techniques like escaping, encoding, or validating input based on context-specific rules.
Developers should learn and implement sanitization whenever handling untrusted user input, such as in web forms, APIs, or file uploads, to prevent security vulnerabilities that could lead to data breaches or system compromises. It is essential in web development, database interactions, and any scenario where external data is processed, as it helps maintain application integrity and protect against common exploits outlined in the OWASP Top 10. Proper sanitization reduces the risk of attacks by ensuring that input conforms to expected formats and does not contain executable code.