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API Security Testing: Auth, Injection and Rate Limits
Authentication, authorisation, injection, rate limiting and data exposure tested against the OWASP API Top 10, with 100% coverage of agreed in-scope. US product and security teams get this work in US hours, 9am to 1pm Eastern, with delivery from India. Stay here for the API layer. Full VAPT sits on penetration testing. A free API audit is the first look.
150+ clients
450+ projects
275+ engineers
15+ years
ISO/IEC 17025:2017Accredited testing laboratory
CMMI Maturity Level 3The process is written down and repeats
ISO 9001:2015Quality management
ISO/IEC 27001Information security
Auth, Injection, Rate Limits and Data Exposure
This is a short sub-page for the API layer. Authentication, authorisation, injection, rate limiting and data exposure are tested against the OWASP API Top 10, with 100% coverage of agreed in-scope. US product and security teams get this work in US hours, 9am to 1pm Eastern, with delivery from India, under ISO/IEC 27001. Burp Suite and OWASP ZAP are what we use on API work. Authorisation between accounts is the finding automated tools miss. We do not claim certified security staff. A free API audit is the first look at one surface.
Auth and Authorisation
Tokens that never expire, roles that leak across accounts, and admin paths a second user can still hit. The agreed in-scope APIs are tested with real roles, not only a scanner dump of the OpenAPI file. A finding is a path to another account, not a screenshot of a tool.
Injection and Data Exposure
Injection, mass assignment and objects that return more than the caller should see. Scope is the agreed in-scope endpoints. We will not pretend a functional API pass is a security pass. Retesting after fixes is part of the original work. 100% coverage of agreed in-scope.
Rate Limits and Abuse
Endpoints that answer forever, brute force that is not throttled, and business logic that a script can drain. Tested against the OWASP API Top 10 on the agreed in-scope set. Full product VAPT sits on penetration testing. This page is the API slice.
Need the API layer tested, not another application scan? Book a scoping call, or start with a free API audit.
Book a CallWhat This Page Covers and What the Other Security Pages Cover
The overview that routes the rest of the set is security testing. Full VAPT sits on penetration testing. Functional API checks sit on API test automation. Hosts sit on infrastructure security testing. Stay here when the problem is authentication, authorisation, injection, rate limiting or data exposure on the agreed in-scope APIs. Every engagement ends with a retest of those assets.
Stay on This Page
The problem is the API: a role that leaks, an object that returns too much, or a limit that never fires. You want those agreed in-scope endpoints tested against the OWASP API Top 10, a risk-ranked report, and a retest. 100% coverage of agreed in-scope.
Go to Penetration Testing
You need an authorised attacker across the application, API, mobile and infrastructure. Penetration testing is that method. We do not run both as two invoices for the same week unless you asked for both.
Proof From Delivery
Sector only. The anonymous bank numbers, then four further engagements. They are security delivery, not a claim that each was an API-only job. The UAE fintech engagement is the API VAPT in this set.
Anonymous bank · VAPT and audit evidence
Before: vulnerability noise was burying the work that mattered, fixes took over 40 days, and audit preparation took five days. After: 68% less vulnerability noise, time to fix under 16 days, audit preparation from 5 days to 5 hours, and a 3.5 times high-risk closure rate.
68% less vulnerability noise TTF from 40+ days to under 16 Audit prep 5 days to 5 hours 3.5x high-risk closureDigital recharge and payments platform
Infrastructure VAPT across the exposed surface. Findings were retested after remediation. Sector and work type only.
Payments platformGlobal marine technology organisation
Web and infrastructure work against the agreed in-scope assets. Sector and work type only.
Marine technologyUAE · fintech
API and network-adjacent exposure on a fintech platform. The client stays unnamed.
UAE fintechSaaS gaming platform
End-to-end work across the agreed in-scope product, with a retest after fixes. Sector only.
SaaS gamingFrequently Asked Questions
Price follows the agreed in-scope APIs: how many endpoints, whether authorisation between accounts is in, injection and rate limits, and that a retest is part of the work. We quote after that list is written down. We do not publish a day-rate on this page. This URL is the API layer against the OWASP API Top 10, not a full VAPT. A free API audit is the first look at one surface.
Application, API, mobile, network, infrastructure, wireless and a full penetration test. This URL is API security testing: authentication, authorisation, injection, rate limiting and data exposure against the OWASP API Top 10. The overview that routes the rest is security testing. VAPT across the product sits on penetration testing. Functional API checks sit on API test automation. Pick the layer you actually have.
Unauthorised testing is illegal. Authorised testing of agreed in-scope APIs, with written permission, is the engagement. We do not scan a neighbour you did not name. This page is the API layer. A full authorised attacker across applications sits on penetration testing. Book a scoping call before anyone touches an endpoint. The rules of engagement are written down first. We do not claim certified security staff.
We will not invent a ranked five. This URL is the API layer, not a tool catalogue. Burp Suite and OWASP ZAP are what we use on API work. Authorisation between accounts is the finding automated tools miss. A scanner dump with no owner is not the engagement. Judge a vendor on agreed in-scope and a retest after fixes. A free API audit is the first look.
A penetration test is quoted after the agreed in-scope product is written down: applications, APIs, mobile and infrastructure. That work sits on penetration testing, not on this page. This URL is the API layer against the OWASP API Top 10. Price follows endpoints, roles and whether exploitation is in. We do not publish a project total here. A free API audit is the first look. Book a scoping call for the API slice.
Judge a vendor on written permission, agreed in-scope, a retest after fixes, and whether they will say this page is the API layer rather than a full VAPT. Ranked lists are not that. Vervali is an ISO/IEC 17025 accredited lab with CMMI Level 3 process, US-hours coverage and delivery from India. We do not rank ten firms. Penetration testing is the VAPT page. This page is the API sub-page.
No. AI can widen a scan. A person still confirms a finding is real, stays inside agreed in-scope, and retests the fix on the APIs you named. This page is API security testing. A scanner dump is not a pentest. We do not claim certified security staff. Authorisation between accounts is what automated tools miss. Book a scoping call if you want that confirmation, not a bot-generated PDF.
It is an authorised test of a web application for exploitable gaps, with a retest after fixes. That method sits on penetration testing. This URL is API security testing: authentication, authorisation, injection, rate limiting and data exposure against the OWASP API Top 10. The overview is security testing. We will not pretend an API pass is a web app pentest. Book a scoping call for the layer you actually have.
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