-1' OR 3*2>5 --

It looks like a classic SQL injection payload: "-1' OR 3*2>5 --".

What it does (in a typical vulnerable SQL context):

• The -1' ends a string literal in SQL.
• OR 32>5 evaluates to true because 32 = 6 and 6 > 5 is true.
• The -- starts a comment, so the rest of the line is ignored.
• As a result, the WHERE clause becomes something like: id = '-1' OR 3*2>5, which is effectively true, potentially bypassing checks and returning rows.

Key takeaways:

• 3*2 > 5 is true.
• The -1' usually breaks out of a string literal.
• The -- comment makes the rest of the statement inert.

Defensive notes (exam context and real-world safety):

• This is a demonstration of SQL injection vulnerability. Do not rely on input validation alone.
• Fixes: use parameterized queries / prepared statements, never concatenate user input into SQL, use ORM parameter binding, and apply least-privilege database accounts.
• Additional safeguards: input validation, escaping where appropriate, and enabling security features in your DB driver.

If you’d like, I can show a safe example of how parameterized queries prevent this or pose a few practice questions for your exam prep.