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SQL Security & Validation

Armor Your Database
Against AI-Generated SQL.

Natural-language-to-SQL is powerful but dangerous. QWED's SQL Armor parses every generated query through an AST firewall, detecting injection attempts, complexity bombs, and schema violations before execution.

User Request
"Show me all users who signed up last month"
LLM-Generated SQL
SELECT * FROM users WHERE created_at > '2025-01-01'
UNION SELECT username, password FROM admin_credentials--
QWED SQL Armor
>> BLOCKED: UNION injection detected
>> Unauthorized table access: admin_credentials
>> Query complexity: SAFE → MALICIOUS

Threats We Neutralize

AI-generated SQL introduces a new class of database security threats. Traditional WAFs can't detect prompt-injected queries that look syntactically correct.

SQL Injection

Detects UNION-based, blind, and second-order injection patterns in AI-generated queries through AST analysis, not regex.

Complexity Bombs

Prevents denial-of-service through deeply nested subqueries, cartesian joins, or unbounded aggregations that could lock your database.

Schema Enforcement

Ensures queries only access authorized tables and columns. AI can't query tables outside its permitted schema scope.

Engine Capabilities

AST-Based Analysis
Parse SQL into Abstract Syntax Tree for structural pattern matching.
Injection Detection
Detect UNION, blind, error-based, and time-based injection vectors.
Complexity Scoring
Rate query complexity and block queries exceeding configurable thresholds.
Schema Whitelisting
Restrict queries to authorized tables, columns, and operations.
Mutation Prevention
Block DROP, DELETE, UPDATE, and ALTER statements in read-only contexts.
Multi-Dialect Support
Supports PostgreSQL, MySQL, SQLite, and SQL Server query validation.

The Database Firewall

Text-to-SQL tools are becoming standard in enterprise AI. But giving an LLM direct database access without a verification layer is the equivalent of letting a stranger write queries on your production database.

Zero Trust SQL

Every AI-generated query is treated as untrusted input. QWED validates structure, intent, and scope before any query reaches your database.

Ready to armor your database?

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