Is 42Crunch good for Cyber insurance renewal evidence?

Cyber insurance renewal evidence requires repeatable, objective data about an API surface rather than a pass/fail checkbox. The tool is a black-box API security scanner that submits a URL and returns a risk score from A to F along with prioritized findings. Because it operates without agents, SDKs, or code access, it can be used on any technology stack without requiring build or deployment changes. Scan time is under one minute for read-only methods (GET and HEAD) and text-only POST for LLM probes, which supports frequent reassessment across a portfolio of APIs.

The scanner maps findings directly to three specific frameworks: PCI-DSS 4.0, SOC 2 Type II, and OWASP API Top 10 (2023). These mappings provide structured evidence that can be referenced in insurance renewal documentation. For other regulations, the product supports audit evidence by aligning with security controls described in frameworks such as HIPAA, GDPR, ISO 27001, NIST, CCPA, NIS2, DORA, FedRAMP, DPDP, APPI, PDPA, PIPEDA, PIPA, UK DPA, LGPD, SOX, GLBA, FERPA through alignment language only, without claiming certification or compliance guarantees.

The tool detects issues across 12 categories derived from the OWASP API Top 10, which are relevant to common insurance loss scenarios. Key areas include:

• Authentication bypass, JWT misconfigurations such as alg=none or expired tokens, and missing claims.
• BOLA and IDOR via sequential ID enumeration and active adjacent-ID probing.
• BFLA and privilege escalation through admin endpoint probing and role/permission leakage.
• Data exposure including PII patterns (email, Luhn-validated card numbers, context-aware SSN), API key formats (AWS, Stripe, GitHub, Slack), and error or stack-trace leakage.
• Input validation issues like CORS wildcard usage, dangerous HTTP methods, and debug endpoints.
• LLM/AI Security with 18 adversarial probes across Quick, Standard, and Deep tiers, covering system prompt extraction, instruction override, jailbreaks, data exfiltration, and token smuggling.

Because the scanner uses only read-only methods (GET and HEAD) plus text-only POST for LLM probes, it does not perform active SQL injection or command injection, which require intrusive payloads outside its scope. It also does not detect business logic vulnerabilities, blind SSRF relying on out-of-band infrastructure, or fully replace a human pentester for high-stakes audits. These limitations are important for underwriters to understand the boundaries of evidence produced.

The scanner includes safety measures such as blocking private IPs, localhost, and cloud metadata endpoints at multiple layers. Customer data is deletable on demand and purged within 30 days of cancellation, and it is never sold or used for model training.

Authenticated scanning is available from the Starter tier and above, supporting Bearer, API key, Basic auth, and Cookie methods. Domain verification is enforced through DNS TXT records or an HTTP well-known file so that only the domain owner can scan with credentials. The tool follows a strict header allowlist, forwarding only Authorization, X-API-Key, Cookie, and X-Custom-* headers.

Integration options include a Web Dashboard for managing scans and viewing reports with score trends and downloadable compliance PDFs, a CLI via the middlebrick npm package using middlebrick scan <url> with JSON or text output, a GitHub Action for CI/CD gating that fails builds below a score threshold, an MCP Server for AI coding assistants, and a programmatic API client for custom integrations.