{keyword}');select Pg_sleep(5)-- ❲Desktop Plus❳

: This is a SQL comment. It ignores the rest of the original, legitimate query so it doesn't cause a syntax error. 🔍 How to Use This for Testing

: Reject any input containing special characters like ; , -- , or SELECT in fields where they don't belong.

: This is the "gold standard." It treats all input as data, never as executable code. {KEYWORD}');SELECT PG_SLEEP(5)--

: Find a search bar, login field, or URL parameter (e.g., ://example.com ). Inject the Payload : Replace the input with the payload. Observe the Lag : If the page loads instantly , the input is likely sanitized.

If the page takes (or more) to load, you have confirmed a PostgreSQL Injection vulnerability . 🛡️ How to Fix It : This is a SQL comment

💡 : If a 5-second sleep works, a hacker can eventually use similar "blind" logic to extract your entire database, one character at a time.

: Ensure the database user for the web app cannot execute administrative commands like PG_SLEEP . : This is the "gold standard

: This attempts to "break out" of a text field by providing a closing single quote.