Free LLM Security Scanner - Test for Prompt Injection and Jailbreaks

Large language models now power support workflows, internal copilots, and external customer experiences. That same flexibility creates security risk because attackers can manipulate model behavior with plain text. Prompt injection payloads can override intended instructions, jailbreak prompts can bypass refusal logic, and prompt leak attempts can expose hidden system directives that include business logic or internal context. In retrieval workflows, indirect injection can arrive through documents, web pages, or records your application trusts, then get forwarded to the model as if it were safe. One-time testing before launch is rarely enough. Risk changes after model updates, system prompt edits, and integration changes. BastionLLM helps teams move from ad hoc checks to repeatable validation by testing real endpoint behavior against OWASP-aligned attack patterns before those failures reach production.

BastionLLM sends controlled adversarial payloads to your API using your real request schema, headers, and response extraction paths. The scanner evaluates whether your model follows system rules or gets steered into unsafe behavior. Tests focus on prompt injection, jailbreak resistance, and system prompt leak patterns that commonly appear in production incidents. Each run returns per-payload verdicts with raw model outputs so engineers can reproduce failures, prioritize remediation, and verify fixes. For ongoing coverage, scheduled scans help detect regressions as prompts, model settings, and integrations evolve.