: This is likely a unique "canary" string or a random tag used by automated security scanners (like Burp Suite or sqlmap) to identify where their injected input is reflected in the server's response.
: This command is used to sort results by the first column. In the context of an injection attack, it is often used to determine the number of columns in a database table by incrementing the number until an error occurs. {KEYWORD} ORDER BY 1-- KtFl
If you found this in your web server logs or as a "piece" of code, it typically indicates that an or an attacker was probing your site for SQL injection vulnerabilities. It is not a functional piece of software but rather a diagnostic tool for identifying security flaws. : This is likely a unique "canary" string