42Crunch for Multi-turn manipulation audit

What middleBrick covers

Black-box scanning with no agents or SDK dependencies
18 LLM adversarial probes across Quick, Standard, and Deep tiers
Read-only methods only, no destructive payloads
OpenAPI 3.0/3.1 and Swagger 2.0 parsing with $ref resolution
Authenticated scanning for Bearer, API key, Basic, and Cookie
Continuous monitoring with diff detection and alerts

Scope of multi-turn manipulation testing

Multi-turn manipulation refers to attacks that unfold across multiple requests, where earlier interactions influence later behavior. The scanner exercises this surface with 18 adversarial probes across three scan tiers: Quick, Standard, and Deep. These probes target system prompt extraction, instruction override, DAN and roleplay jailbreaks, data exfiltration, cost exploitation, encoding bypasses, translation-embedded injection, few-shot poisoning, markdown injection, multi-turn manipulation, indirect prompt injection, token smuggling, tool-abuse, nested instruction injection, and PII extraction.

How middleBrick handles multi-turn scenarios

Because scanning is black-box, the engine sends read-only methods (GET and HEAD) and text-only POST bodies for LLM probes. No agents, SDKs, or code access are required, so the approach works with any language, framework, or cloud. Scan duration is under a minute. The scanner checks for unsafe consumption surfaces such as excessive third-party URLs and webhook/callback endpoints that could be leveraged in chained interactions.

Integration friction and operational considerations

Authenticated scanning at the Starter tier and above supports Bearer, API key, Basic auth, and cookies, with domain verification via DNS TXT record or an HTTP well-known file. Only a restricted allowlist of headers is forwarded, reducing risk when credentials are supplied. The scanner parses OpenAPI 3.0, 3.1, and Swagger 2.0 with recursive $ref resolution and cross-references spec definitions against runtime findings to highlight undefined security schemes or deprecated operations.

What the scanner does not cover for multi-turn manipulation

The tool does not perform active SQL injection or command injection, as those require intrusive payloads outside its scope. It does not detect business logic vulnerabilities, blind SSRF, or guarantee coverage of all multi-turn chains, because these often require deep domain understanding and out-of-band infrastructure. It is not a replacement for a human pentester in high-stakes audits.

Mapping to compliance and reporting

Findings map directly to OWASP API Top 10 (2023), and the tool aligns with security controls described in SOC 2 Type II and PCI-DSS 4.0. Reports include prioritized findings, remediation guidance, and support for audit evidence collection. Organizations can use the Web Dashboard for scan management and trend tracking, generate branded compliance PDFs, and integrate via CLI, GitHub Action, MCP Server, or a programmable API client.

Frequently Asked Questions

Can the scanner test multi-turn manipulation in authenticated contexts?

Yes, authenticated scanning is available from Starter tier onward. Provide credentials and complete domain verification to include authorization-dependent endpoints in the probe sequence.

Does the scanner attempt to exploit or modify data during multi-turn tests?

No. The scanner operates read-only and never sends destructive payloads. It focuses on detection and reporting rather than remediation.

How are multi-turn manipulation findings presented in reports?

Each finding is prioritized with a risk score from A to F and includes context, evidence, and remediation guidance. Reports can be downloaded from the dashboard or accessed programmatically via the API client.

Does the scanner detect all business logic issues related to multi-turn workflows?

No. Business logic vulnerabilities require human expertise and contextual understanding of the application domain. The scanner surfaces related indicators but does not replace manual review.

Can continuous monitoring track multi-turn manipulation findings over time?

With Pro tier, scheduled rescans and diff detection highlight new findings, resolved findings, and score drift. Alerts can be delivered via email at defined intervals and through signed webhooks.