Mobile Application Security Testing Process for Modern Apps

What is Mobile Application Security Testing?

Most people think mobile apps are just smaller versions of websites—but they’re not. They live on unpredictable devices, handle sensitive data locally, and often talk to backend APIs in ways that aren’t well protected.

Mobile Application Security Testing is about finding those weak spots before someone else does. We look at how your app stores data, how it communicates, how it authenticates users, and what happens when someone tries to break the rules.

And we don’t just run a scanner and call it a day. We test real scenarios:

  •       What if someone reverse-engineers your APK?
  •       What if a rooted device bypasses your login flow?
  •       Can a fake app impersonate a user through the API?

 

This isn’t about checking boxes—it’s about making sure your app can actually stand up to real-world threats.

Hand holding a smartphone displaying data analytics and graphs, symbolizing web application security testing and vulnerability assessment.
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Testing Scope Based on OWASP Mobile Top 10

We follow the OWASP Mobile Top 10 not because it’s a checkbox—but because that’s where the most common real-world mobile app issues tend to hide. If it’s on that list, we’ve probably seen it (and exploited it) in the wild.

Here’s what we’re usually looking for:

We check how your app interacts with the mobile OS. That means looking at things like Android intents, iOS keychains, and system permissions. We’ve seen apps accidentally share data with other apps or misuse features that were never meant for secure storage.

Storing tokens, passwords, or user data on the device? We see this all the time. We look at how that data is stored—whether it’s encrypted, where it lives, and how it behaves on a rooted or jailbroken device. If someone steals the phone, how much can they learn?

This is where we test what happens when someone tries to break your login flow. We try logging in without credentials, replaying tokens, or spoofing requests to see if we can get access we shouldn’t have.

When your app talks to the backend, what’s actually being sent? Is it encrypted properly? Can someone intercept it over public Wi-Fi? We simulate that attacker—man-in-the-middle, proxy interception, the works—to see if your app holds up.

This one’s sneaky. Even if login works fine, can a normal user do admin-level things just by changing a request? We test whether roles and access controls are actually enforced—or just assumed to be working.

We unpack your app like an attacker would—decompiling, modifying, and poking around in the APK or IPA. We're looking for hardcoded secrets, sensitive logic, or anything that shouldn't be exposed.

Is debug mode still enabled in production? Is the app logging sensitive data to the console? Using old libraries? These are the kinds of “small” mistakes that attackers love. We catch them before they cause trouble.

Some problems aren’t bugs—they’re baked into how things are built. We take a step back and look at the architecture, the workflows, the logic. Is there a way to bypass critical steps? Skip from user to admin? These issues don’t show up on scanners, but they’re just as dangerous.

Experts performing Mobile Application Security Testing on a smartphone to identify vulnerabilities based on OWASP Mobile Top 10 risks.

Testing Methodology

We don’t use a one-size-fits-all approach. Some apps need full access for deep testing. Others just need to be looked at from an attacker’s point of view. We’ll talk with you and figure out what makes sense—then tailor our method around that.

We’ll help you decide what level of access makes the most sense. The goal isn’t to run a test—it’s to find what actually matters and help your team fix it the right way.

Our Security Testing Process

We don’t do cookie-cutter testing. Every mobile app is a little different, so we adapt the process based on your tech stack, your goals, and how much access you’re comfortable giving. Here’s how it usually plays out:

Pre-Engagement

First, we’ll chat through what you need tested—maybe it’s a new version of your app, maybe something already in production. We figure out access, sort any NDA stuff, and agree on what we’re testing and what we’re leaving out. Quick, straightforward.

Information Gathering

Before diving in, we like to map things out. We’ll run the app, watch the network traffic, look at how it handles permissions, and take notes on how it behaves. This is where we often spot things like exposed endpoints or third-party SDKs quietly doing more than expected.

Vulnerability Assessment

At this point, we’ll start testing more deliberately—both manually and using a few tools. We look for anything risky:

insecure data storage, broken session handling, outdated components. We reference OWASP Mobile Top 10, sure, but also keep an eye out for less-obvious stuff too.

Penetration Testing

If something looks like a real risk, we’ll try to dig in further. Maybe that means bypassing login, intercepting traffic,

or reverse-engineering the app. We won’t crash anything, but we’ll absolutely try to show what could happen if someone tried to exploit the issue.

Reporting

We’ll give you a clean, focused report—no filler. You’ll see what we found, how bad it is, and exactly how to fix it. There’s technical detail for your developers, and a lighter version you can hand off to a client, auditor, or board member.

Remediation & Post-Engagement

Sometimes fixes aren’t obvious. We don’t leave you stuck. If something’s confusing or your team’s unsure about

how to close a gap, we’ll walk through it with you. Simple, direct, and jargon-free.

Once changes are made, we’re happy to retest. It’s not mandatory, but most teams do it just before an audit or when handing the app off to a big client. It’s a solid way to wrap things up.

Why Choose Cyber Guardians for Mobile Application Security Testing

There are a lot of security testing firms out there—but not all of them really get what it means to secure a mobile app in the real world. Here’s what working with us actually feels like:

We Understand How Real Apps Are Built

Your app wasn’t written in a vacuum. There are product deadlines, fast-moving roadmaps, third-party SDKs you didn’t build, and APIs changing in the background. We’ve worked with enough teams to know how things get shipped—and we test accordingly. No judgment, just solid testing that fits where you are.

We Work With Your Devs, Not Against Them

We’re not here to throw a 40-page report at your team and disappear. We explain what we found in normal language, walk through anything that’s unclear, and help your developers focus on fixes that matter. You’ll never hear us say, “just Google it.”

We Go Beyond the Basics

Anyone can run a scanner. That’s the easy part. What we do is dig into the logic, test the flow, and look at how the app really behaves—not just how it’s supposed to. We find the things automated tools miss, especially those edge cases that could lead to real damage.

Reports That Make Sense—To Everyone

You’ll get a technical report your developers can act on and a clear summary that’s ready to share with a client, auditor, or investor. Whether it’s SOC 2, ISO 27001, or GDPR, we’ll give you a deliverable that holds up under scrutiny—and won’t need translating.

We Move Fast Without Cutting Corners

Tight timeline? Prepping for an audit or a big client handoff? We’ve been there. If you need us to move quickly, just say so—we’ll make it work without skipping the parts that count. No drama, no vague excuses.

We’re In It for the Long Haul

We’re not here just to tick boxes and send you a report. What we care about is helping your team get better at this—spotting issues earlier, fixing them faster, and making security part of your normal dev rhythm. If we do our job right, every test after this one should feel less painful. That’s the goal.

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Team Certifications

The VAPT Team Certifications include:

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Tools we use

Frida

Magisk

JADX

Burpsuite

O Tool

Mobsf

Metasploit

Apktool

Drozer

QARK

What You’ll Receive (Deliverables)

Once we’ve wrapped up testing, you won’t just get a technical doc and silence. What we hand over is meant to be useful—from dev standups to boardroom reviews.

Illustration of a digital lock and cloud storage representing secure deliverables in Web Application Security Testing, including vulnerability reports and safe hosting certificates.

As soon as testing is done, we’ll send over a detailed report. It’s not some auto-generated list—it’s tailored to your app. Every issue we flag comes with real context: what we found, how it could be abused, and what to do about it. No jargon. No clutter. Just clarity.

After your team fixes things, we’re happy to take another look. If needed, we’ll update the report so you’ve got a version that reflects the current state of your app. That’s the one most clients keep handy for auditors, stakeholders, or when someone upstairs needs proof that things got handled.

If everything clears—no critical issues left on the table—we can issue a short certificate confirming that testing was done and passed for the agreed scope. Some clients like to use this as part of vendor reviews or security checklists. Totally optional, but often helpful.

Sometimes, people just want something official. We’ll give you a signed letter stating that we conducted mobile app security testing, what we looked at, and when. It’s simple, but it goes a long way when a client or investor wants documentation without flipping through the whole report.

Trusted by 200+ Founders & CTO World Wide

Hear from our satisfied clients. They’ve experienced enhanced cybersecurity posture and peace of mind with our comprehensive services.

JAZEL OOMMEN Co-founder, Munchtime

We enjoyed working with the Cyberguardians team for our security audit. Their responses were always fast and thorough.

Shilpa M Bhatnagar Founder, Haeywa

The Cyber guardians team is very diligent and always available to help. There understanding of cyber security and testing is par excellence.

Jagjeet Singh Manager IT, Lambda Function

Reliable and Prompt Service, Fast execution with clear guidance and support. Awesome experience with CyberGuardians Team.

Resources

Mobile VAPT Resources include:

Screening Report

This is the first report that includes screening data.

Testing Report

This is the final report that includes testing data .

Vulnerability Report

This is the first report that includes Vulnerability data.

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Faq's

Find quick solutions to your most common queries here.

A lot, honestly. We go beyond just running scanners. It’s more about looking at what’s stored on the device, how your APIs are behaving, how login and session handling works, and whether anything can be misused or bypassed. If your app connects to anything sensitive, we’ll test how strong that connection really is. This is what mobile application security testing is supposed to cover—not just surface checks.

Yes. We’ve helped plenty of teams who were either mid-audit or prepping for it. The reports are written to show what was tested, what was found, and what you did about it. Most auditors are looking for that kind of clear documentation anyway. It also helps if your clients ask the “what are you doing for app security?” question.

Yes—though we’ll need to coordinate. Some clients give us staging builds, which is great. If you don’t have one, we can work with production. We just make sure we’re not doing anything that could disrupt live users. You’ll know what we’re doing before we do it.

Give us about a week. Could be less for a simple app, a bit more if it’s bigger or complex. After testing, we usually send the report in 2–3 working days. If there’s a deadline you’re trying to meet, just let us know up front—we’ve worked under tight timelines before.

There’s no fixed number. For a basic mobile app, it might be ₹35K–₹60K. Bigger apps with deeper integrations or lots of moving parts will cost more. We’ll ask a few questions, figure out scope, and give you a straight answer.

We don’t just email it and move on. If you want to go over it, we’ll schedule a call. If your devs have questions or need help figuring out which fixes matter most, we’ll walk through it. And if you want us to retest later, we can do that too.

Yes, both platforms are covered—and we don’t take shortcuts. Android and iOS behave differently, and so do their vulnerabilities. We test them each on real devices (not emulators) so we can see exactly how they act in the wild, not just in a lab.

Yes, we do—and honestly, that’s where a lot of problems show up. Most mobile apps are just the front door; the heavy lifting happens on the backend. So we look at how your app talks to your servers, what kind of data is moving around, and whether anything sensitive could be grabbed or tampered with.

Yes, that’s part of the point. If you're working toward compliance, we’ll help you spot the kinds of issues that come up during audits—before an auditor does. We don’t just test to tick boxes; we show you what needs to be fixed so your app holds up under scrutiny.

Yes, we can. After your team has made the changes, just let us know. We’ll go back and take another look at those areas—not to nitpick, but to make sure everything’s genuinely sorted. It gives you (and us) peace of mind that nothing was left hanging.