API audits you can hand to enterprise customers — even without a security team.
An API audit report you can hand to enterprise customers, and fixes your developers can apply as-is — before release.
ZKSC experts verify every finding from our AI-driven scans, then deliver a Japanese-language audit report ready for partner submission and audits, plus fix proposals pinpointed down to file name and line number — before you release.
- Aligned with OWASP API Top 10
- Delivered in 5–10 business days
- Submission-ready Japanese audit reports
- ZKSC reviewed (every finding verified by experts)
Official service name: ZKSC API Managed Security / Operated by ZKSC 株式会社
src/api/orders.ts:142
修正案：注文の所有者がログイン中のテナントと一致するか検証する
src/webhooks/payment.ts:57
修正案：HMAC による署名検証を追加する
src/middleware/rate-limit.ts:12
修正案：IP とアカウントごとの試行回数制限を導入する
Sound familiar?
Enterprise customers and auditors ask for a third-party API audit report, but nobody in-house can handle it
Traditional audit firms are expensive and slow, and can't keep up with frequent releases
You've adopted automated scanners, but nobody can interpret the findings and drive them to a fix
You worry about incidents caused by business-logic flaws — access control, tenant isolation, payments, webhooks
The internal reviews and coordination needed to hand source code and credentials to an outside vendor are a burden
Protected before release.
Reports you can hand to customers
A submission-ready Japanese audit report you can use as-is for audits and security-checklist responses.
Fixes developers can apply as-is
File names and line numbers, reproduction steps, fix guidance, and ready-to-paste ticket text — everything needed to fix, delivered together.
Built for release decisions
Every finding is prioritized, so you can decide before release whether to fix it now or accept the risk.
Focused on incident-prone areas
We concentrate on the areas where real incidents start — authentication and authorization flaws, tenant data isolation, payment processing, webhooks.
Protected after release too
Three months of change monitoring and re-audits after release catch new risks introduced by post-launch changes.
A setup you can trust
We sign an NDA, DPA, and Rules of Engagement, and explain the scope of AI usage up front — the paperwork your internal procurement review needs.
How it works
Scope & contract
We sign an NDA and Rules of Engagement, agreeing in advance on the audit scope — including what will never be scanned.
Share API details
You provide the OpenAPI definition, a staging environment, test accounts per role, and authentication details.
AI scan + expert review
ZKSC experts verify the automated findings, remove false positives, and assign priorities.
Report delivery + re-audit
We deliver the submission-ready report and developer fix proposals, then run one re-audit after fixes.
Deliverables — Vulnerability list (severity, confidence, impact), reproduction steps with exact locations (file name and line number), fix proposals, ticket-ready text, a submission-ready Japanese report, and a full record of audit activity (audit trail)
From a one-off audit to continuous monitoring.
Release Scan
A full audit of your API before release, with a report and one re-audit after fixes.
Business Monitor
Continuous monitoring of your key APIs, with a monthly report.
Not the cheapest scanning tool.
We are not trying to replace scanning tools like Burp, ZAP, or Snyk. We take on what tools alone can't cover — operations, expert review, Japanese-language reporting, and customer-ready deliverables — as managed security at a mid-market price.
ZKSC reviewed
ZKSC experts verify every automated finding one by one, removing false positives and assigning priorities before anything reaches you.
Strong on business-logic flaws
Access-control flaws (BOLA, IDOR), tenant isolation, payments, webhooks — the defects automated scans struggle to find.
Everything in Japanese
Reports and all remediation communication are in Japanese, ready for internal approvals and customer submission, with support until your fixes are done.
Pre-release + 3 months
Not year-round constant monitoring — we concentrate audits and monitoring on the highest-risk window around your release.
Frequently asked questions
How are source code and credentials handled?
We handle them under our credential-management policy and agree on data retention and deletion terms at contract time. We never subcontract to third parties.
Will production be affected?
We run only non-destructive tests that never modify or delete data. No-scan conditions are agreed in advance, and everything we do is recorded.
How do contracts and legal work?
We sign an NDA, DPA, and Rules of Engagement, and explain before contracting exactly where AI will be used.
Which industries do you serve?
Businesses that ship APIs — B2B SaaS, fintech, Web3, HR, healthcare, real-estate tech, and more.
Start with a single pre-release audit.
In 5–10 business days, you get a Japanese audit report ready to hand to your business partners.
Official service name: ZKSC API Managed Security / Operated by ZKSC 株式会社