Never trust data coming from a user. Always filter it to remove characters like ' , -- , and ; . SQL injection UNION attacks | Web Security Academy
: This command tells the database to combine the results of the original (legitimate) search with a second search created by the attacker. Never trust data coming from a user
This specific line of code is designed to trick a database into revealing information it shouldn't. Here is what each part does: This specific line of code is designed to
The string you provided is a classic example of a used for a "UNION-based" attack. The "Anatomy" of the Payload It tells the database to ignore everything that
: This is a comment marker in SQL. It tells the database to ignore everything that comes after it, effectively "breaking" the rest of the original, legitimate code so it doesn't cause an error. A Helpful Story: The Librarian and the Hidden Note
The librarian goes to the back (the database), finds the gardening books, and brings them to you.
This is the "gold standard" for security. It ensures the database treats all user input as simple text, never as executable code.
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