They might change it to:

This article will explain what each part of this query means, why people search for it, the associated security risks, and — if you genuinely want to understand "free guestbook scripts with live preview applets" — provide safe, legal alternatives. Introduction: The Anatomy of a Suspicious Search When security researchers, penetration testers, or malicious actors use Google, they often employ Google Dorks — advanced search operators that find vulnerable or misconfigured websites. The query you provided is a classic example. It is not a tool you download. It is a search string designed to find specific, often outdated, web applications.

If the page behaves the same, but and 1=2 returns a different or empty page, the parameter is vulnerable. Adding and 1=1 inside a Google search query suggests the user believes Google indexes URLs that already contain SQLi test strings — meaning they want sites that were probed before.

http://example.com/lvappl/guestbook.php?id=5 and 1=1

http://example.com/lvappl/guestbook.php?id=5

Stay safe, code responsibly, and use modern, secure software.