APIsec vs Intruder

Both tools position as developer-facing security utilities, but their deployment assumptions differ. middleBrick is a self-service scanner that requires only a URL and operates as a black-box solution; no agents, SDKs, or code access are needed. Intruder typically requires network reachability, authentication handshakes, and sometimes agent or sensor deployment to exercise endpoints beyond basic read-only checks.

For teams that want to run scans from any environment without maintaining scanning infrastructure, middleBrick removes setup friction. Intruder may suit organizations that already operate their own scanning infrastructure and want tight control over egress points or on-premises execution.

middleBrick covers 12 categories aligned to OWASP API Top 10 (2023), including authentication bypass, JWT misconfigurations, BOLA, BFLA, input validation, rate limiting, data exposure, encryption, SSRF, inventory management, unsafe consumption, and LLM/AI security. It also parses OpenAPI 3.0, 3.1, and Swagger 2.0 and cross-references spec definitions against runtime findings. The tool maps findings to PCI-DSS 4.0, SOC 2 Type II, and OWASP API Top 10 (2023).

Intruder provides broad vulnerability checks, including many common web classes such as SQL injection, cross-site scripting, and directory brute-force, with a strong emphasis on authenticated scanning workflows. Its reporting includes risk ratings and remediation guidance, though it does not explicitly map findings to the same standardized API security categories or OpenAPI spec analysis. For compliance framing, Intruder supports general security frameworks, but does not make mapped claims against specific standards in the same way.

middleBrick supports Bearer, API key, Basic auth, and Cookie authentication for authenticated scans, gated by domain verification (DNS TXT or HTTP well-known file) so that only the domain owner can scan with credentials. It restricts forwarded headers to Authorization, X-API-Key, Cookie, and X-Custom-* headers, and enforces read-only methods (GET, HEAD, text-only POST). Destructive payloads are never sent, and private IPs, localhost, and cloud metadata endpoints are blocked at multiple layers.

Intruder provides authenticated scanning with support for various credential types, including form-based login sequences and session handling. It allows users to define custom payloads and attack logic, which introduces flexibility but also requires careful scoping to avoid unintended impact. Safety controls are configurable but not enforced by default in the same prescriptive way.

middleBrick offers a Web Dashboard for scan management and score trends, a CLI via an npm package for local runs, a GitHub Action to gate CI/CD builds, an MCP Server for AI coding assistants, and a programmatic API for custom integrations. Continuous monitoring options include scheduled rescans, diff detection, email alerts rate-limited to one per hour per API, and HMAC-SHA256 signed webhooks with auto-disable after five consecutive failures.

Intruder provides integrations via webhooks and a REST API, enabling result ingestion into ticketing or SIEM systems. Its native integrations focus on workflow automation around scans rather than developer toolchains. Pricing for middleBrick is tiered with a free plan (3 scans/month), a Starter plan at $99/month for 15 APIs, a Pro plan at $499/month for 100 APIs plus continuous monitoring and CI/CD features, and an Enterprise plan at $2,000/month for unlimited APIs with SSO and audit logs. Intruder uses per-scan or per-seat pricing models, which can scale differently depending on scan frequency and target count.

middleBrick does not fix, patch, block, or remediate findings; it detects and reports with guidance. It does not perform active SQL injection or command injection testing, does not detect business logic vulnerabilities, and cannot perform blind SSRF or replace a human pentester for high-stakes audits. LLM/AI security is limited to the 18 adversarial probe types across defined scan tiers.

When choosing between the two tools, use decision criteria such as whether you need strict read-only safety, OpenAPI spec validation, and prescriptive compliance mapping (favoring middleBrick), or broad web vulnerability coverage with highly customizable attack workflows (favoring Intruder). Consider integration needs: if your workflow depends on CI/CD gates, AI assistant tooling, or continuous monitoring with diff tracking, middleBrick provides purpose-built options. If your program relies on manual tuning of exploit chains and deep authenticated crawl workflows, Intruder may offer more control.