{keyword}');select Pg_sleep(5)-- [TESTED]

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

: Available in most modern frameworks (like Django, Rails, or Express), these automatically handle the heavy lifting of security.

: 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. {KEYWORD}');SELECT PG_SLEEP(5)--

Security professionals use this to confirm a vulnerability exists without damaging data.

: 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

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

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

The string is a classic example of a SQL injection (SQLi) payload designed for Time-Based Blind SQL injection . 🛠️ Anatomy of the Payload