Logic, not syntax
Broken Object Level Authorization (BOLA), missing function-level permissions, abuse of legitimate flows — these are application decisions, not syntax errors. A “200 OK” is no proof of security.
Application Security · API Security
API security that understands business logic
Half of your dynamic web traffic is API calls — and the most dangerous flaws are logical, not technical. We test your APIs the way attackers use them: along the OWASP API Security Top 10, with real identities, and right inside your pipeline.
57–60%of dynamic web traffic are API calls (Cloudflare 2024)
3 of 5of the most common API risks are authorization flaws
43%of newly exploited 2025 CVEs were API-related (CISA KEV / Wallarm)
OWASPAPI Security Top 10 : 2023 as the benchmark
APIs are your largest — and most invisible — attack surface
The website used to be the product. Today the API is the product, and mobile apps, partners, automation and AI agents all speak to the same interfaces. Each one is a door someone should test — and most organizations have more open endpoints than they know about.
The catch: the worst API flaws are not technical bugs but logic errors in authorization. An object belongs to another user, but the API hands it over unchecked — and the request looks perfectly legitimate. That is exactly what classic web scanners miss.
Why APIs break differently
Three reasons generic tools fail at API security.
Context is mandatory
To prove a user can see someone else's data you need two real identities and the knowledge of which object belongs to whom. Without that context, a scanner tests into the void.
More than REST
GraphQL, gRPC, webhooks, LLM endpoints and mutual TLS each bring their own risks. Testing only classic web requests reveals a fraction of the attack surface.
OWASP API Security Top 10 — interactive
The ten most important API risks and how we test each one. Pick an item.
API1
Broken Object Level Authorization
Objects are addressed by IDs. Without an ownership check, a user can retrieve or modify records that belong to others (BOLA/IDOR). It is the most common and most damaging API flaw.
How we test it
We use two real identities to check whether user B can access or change an object owned by user A — direct proof instead of guesswork.
Reference: OWASP API Security Top 10 : 2023
Not a theoretical risk
A selection of real data breaches in recent years — all via APIs, always the same class of flaw.
How we test your APIs
Automated where it brings breadth — human where it needs depth.
Cross-user authorization
Proving BOLA and BFLA with two real identities instead of guessing. The fastest route to the most dangerous flaws.
Broad protocol coverage
REST, GraphQL and gRPC, plus mutual TLS and webhooks. We test the whole attack surface, not just classic requests.
AI & LLM endpoints
LLM back-ends and agents speak over APIs. We test prompt injection and abuse at exactly those interfaces.
Discovery & API inventory
Automatic endpoint discovery surfaces shadow and zombie APIs — you can only protect what you know about.
Evidence-based, not noisy
We only report findings backed by evidence, so the report stays actionable instead of drowning in false positives.
Integrated into the pipeline
Results as SARIF straight into code scanning, with severity gating — continuous rather than once a year.
API security belongs in the pipeline
One-off scans go stale within days. Security comes from tests that run on every change.
Automatic on every release
API tests run inside CI/CD — on every pull request, not once a year.
SARIF & code scanning
Findings appear inline with the code, in the familiar security tab — where developers already work.
Severity gating
The build stops automatically as soon as critical flaws appear. Clear exit codes, clear decision.
Open standards
Built on the open-source OWASP API Security Testing Framework — no vendor lock-in, full traceability.
Automation is the baseline, not the summit: it keeps the known continuously clean so the manual pentest has time for the unknown.
Regulatory tailwind
API security has long been compliance-relevant.
Cyber Resilience Act
The CRA explicitly requires limiting attack surfaces “including external interfaces”. The obligation to report actively exploited vulnerabilities applies from 11 Sep 2026 — with 43% of new KEV CVEs being API-related, a direct link.
NIS2
Access control, cryptography and security in development and procurement: APIs are part of the network and information systems to be protected and belong in every risk management programme.
DORA
Strong authentication and third-party risk management in the financial sector hit APIs directly — integrations to service providers, as in the Salesloft/Drift case, are a core risk.
Further resources
Open standards and matching services — for a deeper dive.
Open standards & sources
OWASP API Security Project The reference project and community around API security.OWASP API Security Top 10 : 2023 The ten most important API risks in detail.OWASP API Security Testing Framework Open-source tool for automated API security testing.OWASP crAPI Intentionally vulnerable API for practice and verification.
Frequently asked questions
Answered briefly.
What is API security testing?
The targeted testing of programming interfaces (APIs) for security flaws — especially authorization errors, weak authentication, missing rate limits and misconfigurations. The benchmark is the OWASP API Security Top 10 : 2023.
Why isn't a normal web scanner enough?
Because the most dangerous API flaws are logical. To prove a user can see someone else's data (BOLA), you need two real identities and knowledge of object ownership. A generic scanner only sees a “200 OK” and reports: all good.
Do you also test GraphQL and gRPC?
Yes. Beyond classic REST we test GraphQL (introspection, resolvers, DoS variants), gRPC, mutual TLS and LLM endpoints — the attack surface of modern APIs goes far beyond REST.
How often should APIs be tested?
Continuously. APIs change with every release, and yesterday's scan can be stale today. We integrate tests into your CI/CD pipeline and complement them with regular, deeper manual reviews.
What does API security have to do with the Cyber Resilience Act?
The CRA requires limiting attack surfaces including external interfaces, and from 11 Sep 2026 introduces an obligation to report actively exploited vulnerabilities. Since a significant share of those vulnerabilities are API-related, continuous API testing becomes immediately relevant.
Let's test your APIs before someone else does
In a free initial call we map your API attack surface and show the fastest path to resilient security — technically sound and compliance-ready.