A scanner reads syntax. We read intent.

Automated scanners catch known bug patterns. They can't tell whether your code lets a user skip a payment, escalate their access, or abuse a feature you built to help them.

We read your code the way an attacker would, for the business logic flaws that actually cost you.

Talk to a Security Expert

Code snippet in auth.js defining an authenticate function that verifies a token using jwt.verify with a secret. If the payload lacks a userId, it throws an AuthError with status 403; otherwise, it returns the payload.

Dark-themed source code editor window labeled SOURCE CODE showing a file named auth.js with lines 1 to 9, with line 6 highlighted. The code content is blurred or redacted.

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Red text on dark background reading 'Weak crypto implementation'.

Green text reading 'Crypto implementation hardened' on a black background.

Red text on a dark background stating 'Hardcoded credentials found.'

Text in bright green on a dark background reading: Hardcoded credentials removed.

Red warning text on black background stating 'Insecure deserialization found'.

The phrase 'Deserialization secured' displayed in bright green text on a black background.

Red text reading 'Broken auth logic' on a black background.

Green text on black background saying 'Auth logic fixed'.

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The question that matters

Your code passes every automated scan. But can someone abuse the logic you built to serve customers?

WHY MOST CODE REVIEWs FALL SHORT

A scanner reads syntax.
It doesn't understand your business.

Automated tools match patterns for known bugs. They have no idea what your app is supposed to do, so they miss the logic flaws, privilege escalations, and abuse paths that don't look like 'bugs' at all. Those take a human reading the code with an attacker's mindset.

Most Code Reviewers

Automated scanner-driven review

Pattern matching for known bugs

Generic security checklists

Findings with no exploitation context

Scanner output defines thoroughness

Mechanical severity ratings

Payatu

AI-native and researcher-led: manual-first review with selective automation

Business logic and workflow analysis, by hand

Adversary-driven threat mapping

Exploitation thinking and real impact assessment

Human reasoning over tool dependency

Risk prioritised by business context

What we Review

Line by line

We read the code that matters most, by hand, for the flaws scanners miss.

Java

JavaScript / TypeScript

C / C++

PHP

Kotlin & Swift

Third-party libraries

Java

Python

JavaScript / TypeScript

C / C++

PHP

Kotlin & Swift

Third-party libraries

Business logic & access

Business logic & workflow abuse

Authentication & authorization in code

Privilege escalation paths

Input handling & injection

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Business logic & access

Data & secrets

Sensitive data handling

Hardcoded secrets & keys

Cryptography use

Error handling & logging

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Data & secrets

Dependencies & design

Third-party libraries & SDKs

Insecure design & anti-patterns

Trust boundaries between components

Update & supply-chain risk

Dependencies & design

Business logic & access

Business logic & workflow abuse

Authentication & authorization in
code

Privilege escalation paths

Input handling & injection

Data & secrets

Sensitive data handling

Hardcoded secrets & keys

Cryptography use

Error handling & logging

Dependencies & design

Third-party libraries & SDKs

Insecure design & anti-patterns

Trust boundaries between
components

Update & supply-chain risk

Process

How it works

Simple, step by step, from first read to confirmed fix.

Understand the app

You share the code and what it does. We learn the risky parts before we read a line.

Map the code

We trace how data and users move through the code, so we know where to look hardest.

Prove the impact

For each flaw, we show how it could
be abused and what it would cost.

Read it by hand

Our reviewers read the code like an attacker, backed by tools for coverage.

Report with fixes

Clear findings ranked by business risk, with secure code examples in your language.

Re-review

After you fix, we check the changes and confirm the flaw is truly closed.

Process

How it works

Simple, step by step, from first read to confirmed fix.

Understand the app

You share the code and what it does. We learn the risky parts before we read a line.

Map the code

We trace how data and users move through the code, so we know where to look hardest.

Read it by hand

Our reviewers read the code like an
attacker, backed by tools for
coverage.

Prove the impact

For each flaw, we show how it could
be abused and what it would cost.

Report with fixes

Clear findings ranked by business
risk, with secure code examples in
your language.

Re-review

After you fix, we check the changes
and confirm the flaw is truly closed.

Process

How it works

Simple, step by step, from first read to confirmed fix.

Understand the app

You share the code and what it does. We learn the risky parts before we read a line.

Map the code

We trace how data and users move through the code, so we know where to look hardest.

Read it by hand

Our reviewers read the code like an attacker, backed by tools for coverage.

Prove the impact

For each flaw, we show how it could be abused and what it would cost.

Report with fixes

Clear findings ranked by business risk, with secure code examples in your language

Re-review

After you fix, we check the changes and confirm the flaw is truly closed.

Real world impact

Real applications, real findings.

IT/SaaS

Secure Source Code Review

Source Code Review of an Internationally Renowned MNC

View Details

IT/SaaS

Secure Source Code Review

Fintech

Secure Code Review

Secure Code Review for One of the Largest Online Payments Service Providers

View Details

Fintech

Secure Code Review

Testimonials

What engineering teams say about working with us

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Carthic Kameshwaran

Head of Delivery - neoEYED

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Arockiaraj Martin

CISO- Enkash

Payatu's focus on in-depth defence, quality, and proactive approach to all their services were precisely what our fast-growing publicly listed company needed.
Payatu's Services have helped us in ensuring that not only do we exceed strict compliance standards, but also ensure that security is not just a tick box exercise in our organisation. We have been able to make security an integral part of...

Simran Gambhir

Chief Information Officer - Butn, Sydney

Payatu delivered a 360-degree penetration testing exercise across our web applications and internal network. Their structured, methodical approach and deep technical understanding were evident throughout the engagement. They didn’t just give us a list of vulnerabilities, they provided actionable insights that helped to improve our security posture. The engagement was constructive.