Quick Answer
Beyond prepared statements: use a query builder or ORM that enforces parameterization. Add a WAF (Web Application Firewall). Apply least-privilege database accounts (read-only user for SELECT-only routes). Validate input types before querying. Log and monitor all database errors. Use database activity monitoring. Avoid dynamic table or column names even with prepared statements.
Answer
Use parameterized queries, avoid dynamic SQL, validate input types, and use secure ORM query builders.
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Verified Answer
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