If you are seeing this in your logs or testing your own code, you should ensure you are using (also known as prepared statements). This practice treats user input as literal data rather than executable code, which completely neutralizes this type of attack.
: These functions convert ASCII numbers into characters. Attackers use this technique to bypass security filters that might block specific words like "admin" or "password." If you are seeing this in your logs
: This is the string concatenation operator in databases like PostgreSQL or Oracle , used to join the characters together. What the characters translate to: Attackers use this technique to bypass security filters
The string you provided is a classic example of a . It is designed to test for or exploit vulnerabilities in a database by "injecting" a command into a search or input field. If you are seeing this in your logs