> For the complete documentation index, see [llms.txt](https://books.spartan-cybersec.com/web/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://books.spartan-cybersec.com/web/sql-injection/lab-1-sql-injection-vulnerability-in-where-clause-allowing-retrieval-of-hidden-data.md).

# Lab 1: SQL injection vulnerability in WHERE clause allowing retrieval of hidden data

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