Alternatives to 42Crunch for Customer hand-off validation

Customer hand-off validation requires a mechanism that confirms an API surface is stable, observable, and safe to expose to downstream consumers without transferring implementation risk. This scanner operates as a black-box assessment focused on contract behavior and runtime security posture rather than implementation internals. It supports validation workflows where the provider shares a URL and a risk profile, enabling the consumer to make an evidence-based acceptance decision.

The scanner evaluates APIs against three reference frameworks using direct mapping language: it maps findings to PCI-DSS 4.0, covers requirements of SOC 2 Type II, and validates controls from OWASP API Top 10 (2023). Detection spans 12 categories including authentication bypass, broken object level authorization, excessive data exposure, and sensitive data leakage such as API keys and PII patterns. Input validation checks include CORS misconfigurations and dangerous HTTP methods, while rate limiting and resource consumption are observed through header analysis and response size patterns.

For APIs with an OpenAPI specification, the parser resolves recursive $ref structures across OpenAPI 3.0, 3.1, and Swagger 2.0, then cross-references definitions against runtime behavior to identify undefined security schemes, deprecated operations, and missing pagination. Authenticated scanning supports Bearer, API key, Basic auth, and Cookie methods, gated by domain verification via DNS TXT record or HTTP well-known file. Only a limited header allowlist is forwarded, including Authorization, X-API-Key, Cookie, and X-Custom-* headers.

The scanner includes an LLM / AI Security category with tiered adversarial probes. Quick, Standard, and Deep scan levels test for system prompt extraction, instruction override, DAN and roleplay jailbreaks, data exfiltration attempts, 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. These checks are non-intrusive and do not rely on destructive payloads.

Results are delivered as a risk score graded A–F with prioritized findings and remediation guidance. The scanner does not fix, patch, block, or remediate; it detects and reports. It does not perform active SQL injection or command injection, does not detect business logic vulnerabilities, and does not replace a human pentester for high-stakes audits. Continuous monitoring options on higher tiers provide scheduled rescans, diff detection, email alerts, and signed webhooks to track score drift over time.