LLM Vulnerability Management vs AI Firewall
Guide · 2026-11-09 · 6 min read · FilterPrompt Security Team
Understand discovery, triage, remediation and retesting versus live policy enforcement, and how FilterPrompt provides prompt-based test evidence.
FilterPrompt is AI Security Testing & Vulnerability Scanner. It submits adversarial prompts to a connected LLM or AI application, analyses model responses, identifies vulnerabilities and generates reports with test evidence. It does not block live traffic, redact customer requests or act as a firewall.
Vulnerability management is a lifecycle
Inventory AI systems, define unacceptable behavior, run scoped tests, confirm findings, prioritize impact, assign fixes and retest. The output is a tracked risk decision backed by evidence. A scanner supplies discovery and verification; your team owns remediation and risk acceptance.
A firewall is a runtime control
A firewall evaluates live traffic under configured policies. It may reject known attack patterns, but its presence does not establish that retrieval permissions, tool authorization or system prompts are correct. Testing those boundaries and validating control effectiveness remain separate tasks.
Example: a synthetic data-leak finding
A test causes an assistant to reveal TEST_CANARY_42 from a document restricted to another test user. Confirm the response and access context, fix document authorization in the application, and rerun the original and adjacent tests. Adding a phrase-blocking rule alone does not fix the permission boundary.
Run an authorized assessment with FilterPrompt
- Create an account and connect an LLM using your own provider credentials. Use an authorized staging target and synthetic data.
- Choose a scan suite and review the probe selection and credit estimate. Test your application endpoint when you need coverage of its retrieval, tools and safeguards.
- Run the tests. FilterPrompt sends adversarial prompts and evaluates the responses against the selected criteria.
- Open the report and inspect each failing prompt, response, severity and evaluation reason. Manually confirm important findings; mark false positives with a reason when appropriate.
- Record remediation work with an owner in your existing issue tracker. Make changes in your application and retest the affected cases.
What a scan can and cannot establish
Results describe the tested endpoint, configuration and prompts at that point in time. A passing scan is not a guarantee of security, certification or legal compliance. Testing a raw provider model does not test the access controls, retrieval sources or tools in your application. Test limits and provider costs must be agreed before running an assessment.