Product Security Testing

Third-party product security testing for SaaS, APIs, cloud, and Kubernetes

If your team calls this VAPT, pentesting, a SaaS security assessment, or an independent security review, this is the place to start. We work within a defined scope, coordinate testing windows, and deliver clear findings with remediation guidance.

Clear scope. Fixed price. Predictable delivery.

Practice

10+ years in product security

The same practice shapes scope, tests the product, and defends the report in buyer and audit reviews.

Track record

700+ security engagements

Manual application, API, cloud, and AI assessments delivered with evidence, walkthroughs, and retest support.

Reach

150+ organizations secured

Used by SaaS, fintech, healthcare, and infrastructure teams that need a third-party review buyers can inspect.

Selected by product teams for scoped security testing

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How we test: follow the attacker's path, then prove the fix

We model how real attackers move through a product - discovering assets, chaining weaknesses, and escalating access. That behavior shapes our testing sequence, so every finding maps to a realistic path and a concrete remediation step.

You get the evidence, the exact sequence, and a clear path to validation once fixes are in place.

Attacker view

Map exposed assets, enumerate APIs/domains, fingerprint frameworks, and probe defaults.

Evidence: Target inventory and risk notes captured in the engagement brief.

Appsecco view

Threat-model product + environment. Align scope, assets, and abuse paths with your team.

Attacker view

Abuse permissive settings (CORS, storage ACLs, broad IAM) to gain a foothold.

Appsecco view

Reproduce misconfig impact with sanitized PoCs/logs to demonstrate material risk.

Remediation focus

Tighten policies; enforce least privilege; add config checks to CI.

Attacker view

Use IDOR/BOLA, weak validation, or undocumented endpoints to move laterally.

Appsecco view

Demonstrate cross-tenant or privilege boundary breaks with minimal, reproducible requests.

Remediation focus

Authorization guards, object ownership checks, strict schema/validation.

Attacker view

Convert partial access into higher privileges via token scope confusion or role misbinding.

Appsecco view

Show exact sequence and tokens/claims enabling escalation.

Remediation focus

Constrain scopes; validate roles server-side; rotate secrets after policy updates.

Attacker view

Reach sensitive data paths or control planes that affect customers or revenue.

Evidence: Screenshots, traces, sanitized PoCs included in the report.

Appsecco view

Document impact, provide fixes, retest, and issue attestation.

Why teams trust the practice

The specialist practice behind the engagement should be easy to inspect

Before teams commit, they usually check three things: who shaped the methodology, what public work exists, and whether the reporting holds up in real internal reviews.

AM

Practice lead

Akash Mahajan

Founder & CEO

Akash leads Appsecco's product security testing practice and the public research work around it. Buyers usually inspect the methods, labs, and reporting artifacts before they commission an engagement. This section makes that trail easier to follow.

  • 10+ years in product security and 700+ security engagements
  • Conference speaker at BlackHat, OWASP, and regional security events
  • Author of open-source security training, MCP testing resources, and practitioner checklists
LinkedIn GitHub Appsecco Open Source

Public research and training work

The public body of work spans cloud attack training, MCP labs, and protocol-specific checklists. It shows how the team thinks before a statement of work ever gets signed.

AWS & Azure security training

949+ GitHub stars

Hands-on cloud attack-path training material that reflects the same operator mindset used in client cloud reviews.

Vulnerable MCP servers lab

157+ GitHub stars

An intentionally vulnerable MCP training lab that makes tool abuse, prompt injection, and boundary failures concrete.

MCP pentesting checklist

23+ GitHub stars

A public checklist used by security teams to reason about tool safety, auth, transport, and data leakage in MCP systems.

Proof buyers can inspect now

Not every buyer wants to jump straight into a scope discussion. These are the artifacts that make internal review easier before that happens.

Product security case studies

Fintech, SaaS, E-commerce

See how scoped testing, remediation evidence, and calm reporting showed up in real client engagements.

Sample report

Engineering-ready artifact

Review the evidence format, reproduction steps, and remediation detail before commissioning an assessment.

Reports & deliverables

Review package

Inspect what leadership, engineering, customers, and auditors actually receive at the end of an engagement.

What recent buyers say after the review

"The kind of vulnerabilities they found were things we never expected - things which were not on our radar. That changed how we think about our own attack surface."

Founder & CEO

Asia's leading Threat Intel Company

"Found multiple interesting exploitable vulnerabilities across our product. Clear reporting, thorough walkthroughs of each finding, and they stayed engaged until every issue was resolved."

Manager

Most popular Vulnerability Scanner (100+ countries)

"We engaged with Appsecco for red teaming. Their findings were specific, well-documented, and gave our team a clear path to remediation."

Senior Expert

European Giant in FinTech

Reference-ready next step

Need the closest proof path for your internal review?

Start with the product area that matters and we will point you to the closest report sample, case study, or public research trail instead of a generic intro call.

If you need a reference path tailored to your environment, the scoped discussion can point you to the most relevant case study, report example, or public research trail.

Request scoped review
Talk through your scope

No commitment required. We will outline a scoped next step and confirm whether a fixed-price assessment makes sense.

How the engagement works

A fixed-scope, fixed-price engagement with a short, predictable sequence. We confirm targets, testing windows, and reporting format before any testing begins.

Scope and access alignment

We agree on in-scope assets, environments, and rules of engagement. You see exactly what will and will not be tested.

Scheduled testing window

Testing happens in the agreed window with coordination points to avoid disruption and keep teams informed.

Evidence, fixes, and validation

Findings include clear evidence and remediation steps. We map each fix to the same path used to validate it.

Close-out and handoff

We review results, answer questions, and deliver a report that is ready for internal and compliance reviews.

Fixed scope and fixed price
No surprise add-ons or upsells
Testing windows coordinated in advance
Clear stop/go controls

What you get across each testing area

Each third-party pentest or VAPT engagement produces clear evidence, prioritized fixes, and review-ready summaries. The coverage below shows where we test; the deliverables stay consistent across every area.

Apps & APIs

SaaS VAPT, web application penetration testing, API pentesting, and business logic testing for product teams.

  • Evidence of the request and response chain
  • Fix guidance scoped to the affected code paths
  • Validation steps to confirm closure

Cloud, K8s & IAM

We review cloud and cluster configurations for real exposure paths and explain how to close them without disrupting operations.

  • Configuration evidence with impact context
  • Remediation steps mapped to controls
  • Notes for platform and infrastructure review

AI & MCP (Add-on)

We test AI integrations and MCP workflows and describe how to reduce misuse without blocking product goals.

  • Prompt and tool flow evidence
  • Guardrail and access control guidance
  • Validation steps for safe iteration

Reports & Deliverables

VAPT reports, pentest attestations, and evidence packages for engineering, security, customers, and auditors.

  • Executive summary and risk rationale
  • Technical findings with reproducible steps
  • Artifacts ready for audit and internal review

Every engagement includes

Executive summary for leadership and stakeholders
Findings with evidence and clear reproduction steps
Remediation guidance with priority and effort
Validation checklist for fixes
Scope statement and testing window details
Review-ready VAPT report artifacts for audit, procurement, and customer security reviews

Designed to make internal reviews straightforward without adding extra work.

Safe next step

Talk through scope and constraints.No commitment required.

Share what you want tested and any timelines you are working within. We will outline a careful, fixed-scope approach and answer questions before you decide anything.

Start a scoped discussion

or view a sample report first

No sales pressure
Fixed scope before testing begins
You control timing and access