Services/Application Security

Application Security Services

Application security services that fix issues before release

Secure code review, threat modeling, design reviews and scanner triage from offensive security engineers. Every finding comes with a code reference or proof of concept and a fix your developers can ship.

Manual secure code review, guided by SAST
Threat modeling and design reviews before you build
SAST, DAST and SCA results triaged, false positives removed
Mapped to OWASP ASVS and the OWASP Top 10

Scope my AppSec review See a sample report Talk to an expert →

The credentials behind every engagement

2026 CyberSecurity Breakthrough Awards winner

Penetration Testing Solution of the Year2026 CyberSecurity Breakthrough Awards

Reviewed by Omair Manzoor, Founder & CEO, ioSENTRIX · Updated November 2026

Trusted by security teams at

See it in action

A pentest is a snapshot. Your risk isn't.

One release, two ways: a single pentest before go-live, or ioSENTRIX Continuous Security: AppSec as a Service plus CTEM, powered by PTaaS.

Time →

Planned go-live

Typical

One pentest before go-live

Open findings

Plan

Code

Build

Test

Pentest

Untested after launch

Fix and retest

Go-live· Late

Launch slips

ioSENTRIX

Continuous Security

AppSec as a Service + CTEM

Open findings

Threat model

Code review

Dependencies

Tuned scans

PTaaS pentest
on change

Go-live · on time

CTEM: found and validated

AppSec as a Serviceevery release →

CTEM PTaaS

Open findingFound and fixedLate reworkPTaaS:Monthly DASTPentest quarterly or on changeAnnual deep test

Swipe to see the full timeline →

Late findings delay launch

Flaws stay open until the pentest finds them all at once, and the fixes push go-live back.

Then nothing until the next test

New exposures after launch stay open until the next pentest comes around.

Build it right, then keep proving it

AppSec as a Service fixes flaws where they start. CTEM, powered by PTaaS, finds and validates new exposures all year.

Read this exhibit as text

The same release is built two ways: with one pentest before go-live, and with ioSENTRIX Continuous Security.
With one pentest, four flaws (an authorization gap, SQL injection, a vulnerable library and an unprotected API) stay open until the pentest finds them together. Fixing and retesting them pushes go-live past the planned date.
After that launch, a new CVE in a library and an exposed admin panel stay untested until the next pentest. Two findings are still open at the end.
With Continuous Security, AppSec as a Service catches each flaw in the stage where it starts: threat modeling, code review, dependency review and tuned scans. A PTaaS pentest on change confirms the release, and go-live happens on time.
After launch, CTEM, powered by PTaaS (monthly DAST, a pentest quarterly or on each major change, and an annual deep test), finds and validates the same new exposures. No findings are left open.

Source: ioSENTRIX Continuous Security methodology. Findings are illustrative examples, not client data.

The short answer

What are application security services?

Application security services find and fix security weaknesses in software before and after it ships. They include secure code review, threat modeling, design reviews, and static, dynamic and dependency testing (SAST, DAST and SCA), with findings explained in the code your developers already work in.

A penetration test shows what an attacker can do to a running application. Application security work starts earlier: it reviews designs and code, so issues are fixed while they are still easy to change. Secure code review services pair tools with manual review, because scanners miss business logic and authorization flaws.

At ioSENTRIX, application security work is done by hand by certified engineers at a CREST-accredited firm, with findings mapped to OWASP ASVS 5.0 and the NIST SSDF (SP 800-218).

You need application security services if

You are designing a new product or a major feature
Scanners produce more findings than your team can triage
A customer or auditor asked for secure code review evidence
You have no in-house AppSec engineer, or need more of them

What we do

Four ways we secure your software

Scope follows how you build. Most engagements combine two or more of these.

Design

Threat modeling & design review

Find design flaws before anyone writes code.

Data flow diagrams & trust boundaries
STRIDE-based threat identification
Authentication & authorization design
Cloud & third-party integration risks

Code

Secure code review

Manual review of the code that matters most, guided by SAST.

Authentication, session & access control
Injection & input handling
Cryptography & secrets
Business logic flaws

Tools

SAST, DAST & SCA

Scanner results your developers can trust.

Tool setup & tuning in CI/CD
False positive removal
Dependency & SBOM review
Priority based on exploitability

Program

Secure SDLC & enablement

Make security part of how you build.

Security requirements & secure SDLC
Security champions support
Secure coding training
Maturity review against OWASP SAMM

Methodology

How we test: example review cases

A sample of the checks in a typical application security engagement. Your scope decides the full list.

TM-01

Trust boundary review

We map where data crosses trust boundaries, such as browser to API or service to service, and check each crossing for authentication and validation.

SCR-01

Authorization on every route

We trace each API route and handler to confirm it checks the caller's permissions, not only that they are signed in.

SCR-02

Injection paths

We follow user input from entry point to database, shell, template and file system calls, looking for places it is not handled safely.

SCR-03

Secrets and cryptography

We look for hardcoded keys, weak algorithms, home-grown crypto and tokens that never expire.

SCA-01

Reachable vulnerable dependencies

We check whether vulnerable library functions are actually called by your code, so upgrades are ranked by real exposure.

VAL-01

Scanner finding validation

We reproduce SAST and DAST findings by hand, remove false positives and confirm which issues are exploitable.

Sample finding

What a finding looks like in our report

An illustrative example in our report format. Not client data.

Finding 01 · IllustrativeHigh

Invoice export endpoint checks login but not ownership

OWASP Top 10: Broken Access Control · CWE-639 Authorization Bypass Through User-Controlled Key

What we found

Code review showed the invoice export handler loaded records by the ID in the request and only checked that the caller had a valid session. The SAST tool did not flag it, because nothing in the code looked unsafe on its own. Changing the ID in the request returned another customer's invoice.

Impact

Any customer can download every other customer's invoices.

How to fix it

Load records through a query scoped to the caller's account, and add a shared authorization check to every handler that takes an object ID. Add a test that requests another account's object and expects a denial.

What you get

What you get from every AppSec engagement

Not a scanner export. Reviewed findings and fixes your developers can act on.

Findings with code references, ranked by exploitability

Each finding points to the file and line, explains how it could be exploited and gives remediation guidance for your language and framework.

Threat models you keep

Design reviews produce data flow diagrams, threats and agreed mitigations your team can update as the product changes.

Walkthrough, then re-review

The engineer who found each issue walks your developers through it, and re-review is available once fixes land.

ioSENTRIX sample penetration test report cover

See how we write findings before you talk to us

A redacted sample penetration test report (web application): finding write-ups, proof-of-concept evidence and remediation. No form required.

Download the sample report (PDF) →

Verified reviews

What security leaders say about working with us

★★★★★

“Unlike other providers, Omair and his team truly dive deep into our infrastructure, delivering findings that go well beyond the surface level. Communication is direct and seamless.”

Jesus B.

Cybersecurity Manager, Banking

Verified G2 review ↗

★★★★★

“We were impressed with ioSENTRIX’s ability to independently validate the security of our customer-facing product.”

Zeehasham R.

Data Scientist, Security Operations · Fortune 500 insurer

Verified Clutch review ↗

★★★★★

“The team at ioSENTRIX is professional and highly skilled at their craft.”

Awwab A.

SVP, Chief Information Security Officer

Verified G2 review ↗

How it works

How an application security engagement works

Four steps, so you know what happens and what you get.

Scope

We agree the applications, repositories, designs and tools in scope, and what you need to prove at the end.

Start

Review and testing

Engineers model threats, review code and triage scanner results, starting with the riskiest parts of the application.

Most of the engagement

Report

Each finding has a severity, a code reference or proof of concept and remediation guidance.

At close

Fix support

We walk your developers through the findings and re-review fixes once they land.

After fixes

Reply in under an hour → scoping call → fixed quote in writing → review, by scope → report, walkthrough and re-review

How we compare

Not a scanner license. Not a pentest after the code ships.

What application security services cover compared with the usual alternatives.

ioSENTRIX application security

SAST / DAST tool alone

Annual pentest alone

When issues are found

In design, in code and before release

On every scan

After release

Business logic & authorization

Reviewed by hand in the code

Rarely detected

Tested in the running app

False positives

Removed before you see them

Left for your team to triage

Few

Fix guidance

File, line and a fix for your framework

Generic rule text

Remediation guidance per finding

Standards

OWASP ASVS, OWASP Top 10, CWE

Varies by tool

OWASP Top 10, PTES

Scope my AppSec review

Scope and price

What affects the scope and price of AppSec work

Application security engagements are priced on effort. These are the decisions that move the quote.

What moves the quote

01Lines of code, languages and frameworks in scope
02How many applications, services and repositories
03Whether threat modeling and design reviews are included
04Whether we use your SAST, DAST and SCA tools or bring our own
05A one-off review, or ongoing support for each release
06Re-review windows and the evidence your customers expect

Read: One-Off AppSec Services: Flexible & Targeted Security Solutions →

What we need from you to start

Read access to the repositories in scope
Architecture or design documents, even rough ones
Existing scanner results, if you have them
A developer contact for questions during the review

Scope my AppSec review

Case studies

Engagements we have run

Anonymized examples of ioSENTRIX engagements. Clients are described by industry, not named.

Insurance

AppSec program development

An application security program across hundreds of custom applications: a three-year roadmap, design review, threat modeling, scanning and developer training.

Read the case study →

Enterprise software

AI-assisted development security assessment

How AI-assisted development affected code security across three application environments, using pull-request analysis, SAST and CI/CD pipeline review.

Read the case study →

Track record

Numbers you can check

Ratings you can verify on G2 and Clutch.

4.9 / 5

on G2 from 12 verified reviews

5.0 / 5

on Clutch, Premier Verified

2017

founded; CREST-accredited, ISO 27001 certified, SOC 2 Type 2 attested

Independently verified

Credentials held by the firm

Every engagement runs inside a company whose methods and own security are checked by outside bodies.

CREST-accredited for penetration testing

CREST assesses the firm's testing methodology, quality assurance and handling of client data.

View our CREST listing →

SOC 2 Type 2 attested

An independent auditor tested our own security controls over time.

Request the SOC 2 report →

ISO/IEC 27001 certified

Our information security management system is certified to ISO/IEC 27001.

View in our trust center →

Recognized independently

Penetration Testing Solution of the Year, 2026 CyberSecurity Breakthrough Awards. G2 High Performer, Fall 2026.

Award announcement →See our G2 reviews →

Founded in 2017.

Our commitments

What you can count on

Four promises we make on every testing engagement.

Free retest of every fixOnce your team fixes a finding, we test it again at no extra cost and update the report.
A fixed priceThe quote you sign is what you pay. The price only changes if you change the scope.
A report your auditor acceptsIf your auditor has questions about the report, we answer them and update it until it is accepted.
A reply in under an hourSend the form and we reply within an hour during US business hours.

Get a scoped quote

For your buying team

Everything your reviewers will ask for

Security, finance and procurement each need something different. Forward this page, or pull what each reviewer needs.

For security

Sample report

See exactly what you get: findings, proof of concept, fixes and retest results.

Download the sample report (PDF) →

For vendor risk

Trust center

Our SOC 2 Type 2 report and security documentation for your vendor review.

Open the trust center →

For procurement

Procurement pack

Master services agreement, sample statement of work, certificate of insurance and W-9.

Request the procurement pack →

For your team

Share this page

Send the link to the people who need to sign off.

Who you work with

Who does the work

Senior security engineers do the hands-on work and write up the results, so the person who found an issue explains it to your team.

Certified engineers

Each engineer holds one or more of OSCP, OSWE, OSCE, CISSP, CISA or AWS security certifications.

Accredited firm

ioSENTRIX is CREST-accredited for penetration testing, ISO/IEC 27001 certified and SOC 2 Type 2 attested.

Since 2017

Founded in 2017, with security work for Fortune 100, financial services, insurance and SaaS companies.

Ready to find the flaws your scanners miss?

We reply in under an hour · no sales pitch

Scope my AppSec review

Standards

Frameworks we test and map to

◆OWASP ASVS 5.0◆OWASP Top 10◆OWASP SAMM v2◆NIST SSDF (SP 800-218)◆CWE◆STRIDE

FAQ

Frequently asked questions

What is secure code review?

Secure code review is a close reading of source code for security weaknesses, such as missing authorization checks, injection and unsafe cryptography. We use SAST tools for breadth and manual review for the logic and access control issues tools miss.

What is threat modeling?

Threat modeling is a structured way to find what could go wrong in a design before it is built. We map data flows and trust boundaries, identify threats with methods such as STRIDE, and agree mitigations with your team. Read more on threat modeling in AppSec.

What is the difference between SAST and DAST?

SAST (static application security testing) analyzes source code without running it. DAST (dynamic application security testing) attacks a running application from the outside. Each finds issues the other misses, so we use both and confirm results by hand.

Do you offer ongoing application security, not just one-off reviews?

Yes. One-off reviews suit a single release or audit. For coverage of every release, see application security as a service.

How long does a secure code review take?

Most reviews run days to weeks, depending on code size, languages and how much threat modeling is included. We reply in under an hour during US business hours, and the scope, timeline and fixed quote follow the scoping call.

Resources

Go deeper before you scope a test

Practical guides from our testers on the questions buyers ask most.

Guide · 10 min read

How to achieve application security with a secure software development lifecycle (SDLC)?

Learn and understand the necessity of application security with the right ways to implement secure SDLC to reduce data breaches and cyber-attacks.

Read the guide →

Guide · 7 min read

Threat Modeling in AppSec: Reducing Vulnerabilities Before Deployment | ioSENTRIX

Understand how threat modeling reduces application vulnerabilities before deployment by identifying design-level risks, strengthening AppSec…

Read the guide →

Guide · 10 min read

AppSec vs DevSecOps | ioSENTRIX

AppSec and DevSecOps are two related but distinct approaches. Both protect software, but focus on different parts of the process.

Read the guide →

Keep exploring

Related services

ServiceApplication security as a service HubContinuous Security (CTEM)ServiceWeb application & API penetration testing

Ready when you are

Fix security issues before they ship

Tell us what you are building and how your team ships. We will scope the right review and send a fixed quote based on effort.

We reply in under an hour · Fixed quote in writing before work starts · Your details are never shared