If the librarian is "vulnerable," they won't realize you've added a second, unauthorized command. They will return with a stack of gardening books, but sitting right on top will be a slip of paper with a name from the payroll. How to Stay Safe
If you are seeing this on your own website logs or search bar, it means someone (or an automated bot) is testing your site for security holes. To prevent this: If the librarian is "vulnerable," they won't realize
You go to the librarian (the website) and ask, "Show me all books about Gardening " (the KEYWORD ). If the librarian is "vulnerable