Penetration testing -

At Nextdoorsec, we know that mobile apps are a crucial part of your business, and security is paramount. That’s why we offer our Mobile App Attack & Penetration Test service, which focuses on evaluating the security of your Android and iOS mobile apps. Our team of experts takes a blackbox approach to attack your apps and find vulnerabilities before attackers do.

After our comprehensive assessment, we’ll provide you with a report detailing the vulnerabilities we found, along with recommendations for how to fix them. Don’t let security issues in your mobile apps put your business at risk, trust Nextdoorsec to keep your apps and your customers safe.

Our Methodology

Being one of the top pentesting companies, Nextdoorsec’s Mobile App Penetration Tests cover the OWASP Top 10 Mobile Risks vulnerabilities and are conducted from a blackbox perspective. We have a systematic approach to these tests, which involves gathering intelligence about your mobile applications to identify sensitive inputs, services, files and data, as well as potential flaws in your Android and iOS mobile applications.

Our team then analyzes and reviews these potential flaws and maps them to their associated vulnerabilities. We also aim to extract sensitive data and present flaws in your mobile applications, such as authentication, session handling, and data storage, to demonstrate the impact of a real attack.

We want to assure you that we only start our penetration tests after you have given us explicit and signed authorization. At Nextdoorsec, we take security seriously and want to help you identify vulnerabilities and fix them before any malicious actors exploit them.


At Nextdoorsec, we start each project by gathering customer goals and obtaining rules of engagement. This ensures that we fully understand our client’s needs and requirements, allowing us to tailor our offensive cybersecurity services to best meet their needs.


We kick off our offensive cybersecurity services by performing a thorough scanning and enumeration process. This helps us identify any potential vulnerabilities, weak spots, and possible exploits that can compromise your organization’s security.


Nextdoorsec will exploit possible vulnerabilities to confirm them. This helps us assess each vulnerability’s effect on your IT infrastructure. Once successful access has been obtained, additional discovery will be conducted to explore the extent of the potential risks.


Nextdoorsec carefully documents all identified vulnerabilities, successful and unsuccessful exploitation attempts, and overall company strengths and weaknesses to provide comprehensive and actionable reports to our clients.

Why take chances with your mobile apps' security until they get hacked?

Contact Nextdoorsec today to learn how we can help secure your Android and iOS mobile apps.

What vulnerabilities and tests does our Mobile Penetration Test cover?

At Nextdoorsec, our Mobile App Penetration Tests target the vulnerabilities outlined in the OWASP Mobile Top 10 methodology. These are the most critical security flaws that can compromise the security of your mobile applications. Our tests are designed to identify these vulnerabilities, which could allow attackers to take control of your mobile app, steal sensitive data, or cause your mobile app to malfunction.

💣 Insecure Data Storage

At Nextdoorsec, we identify not only insecure storage of credentials on the mobile file system, inside application databases, or inside the keychain but also discover unintended data leakage originating from cached data such as URLs, logging, buffer caching, and more. Our Mobile App Penetration Tests are designed to uncover these vulnerabilities and provide you with a comprehensive report on how to fix them to prevent exploitation by malicious attackers.

💣 Insecure Authentication

We meticulously identify user and device identification failures and weaknesses in session management within your mobile applications. Our experts evaluate the maintenance of user and device identity within the mobile app and pinpoint any vulnerabilities that could lead to unauthorized access or session hijacking. We ensure that your app is secured against such risks, so your users can confidently use your mobile application.

💣 Insecure Communication

Our Penetration Testing Services identify any misuse of SSL handshaking, weak SSL negotiation, use of incorrect SSL versions, and clear-text communication. Our Mobile App Penetration Test aims to ensure that your Android and iOS mobile apps utilize secure communication protocols, such as SSL/TLS, to protect sensitive data in transit.

💣 Improper Platform Usage

Our Penetration Testing Service providers are experts at identifying misuse of mobile platform features or failure to use platform security controls. We specialize in discovering the misuse of platform permissions, the keychain, and other security controls that are part of the mobile operating system. Our Mobile App Penetration Tests thoroughly assess the security of your mobile applications to ensure that all security controls are used appropriately and effectively. 

💣 Insecure Authorization

We uncover authorization failures that result in anonymous access to resources where the mobile application intends and requires authenticated and authorized access. Our Custom App Penetration Tests aim to detect such security flaws and provide comprehensive reports on how to fix them to prevent exploitation by malicious individuals.

💣 Insufficient Cryptography

We strive to detect weaknesses in the implementation or lack of cryptography in mobile applications. This includes identifying flaws in using cryptographic algorithms, incorrect key management, or inadequate encryption of sensitive data. Our goal is to help you strengthen the security of your mobile applications and protect them from potential attacks.

💣 Client Code Quality

At Nextdoorsec, we go beyond blackbox testing and conduct whitebox testing, where we review the source code of mobile applications to identify implementation problems at the code level. We look for vulnerabilities such as buffer overflows, format string vulnerabilities, and untrusted inputs that could expose your mobile applications. Our thorough approach to testing helps ensure that your mobile applications are secure and resistant to attacks.

💣 Code Tampering

We investigate whether it is possible to misuse and tamper with device resident and installed mobile applications, and how this could be achieved. Our experts analyze memory patching, local resource and memory modification, method hooking, and other methods that could be used to achieve unauthorized access to your mobile applications. By uncovering these potential vulnerabilities, we help you to prevent exploitation by malicious individuals.

💣 Reverse Engineering

Our web application penetration testing services examine the mobile application binary files to gather information that could be visible to malicious attackers, such as cryptographic information, that could be used to exploit the mobile application.

💣 Extraneous Functionality

We also search for any extraneous functionality within the mobile application that should not appear in the public release version of the application. This may include hidden backdoor functionality left by the developers, unintended sensitive data exposure, disabling 2-factor authentication (2FA) during testing, and other similar issues that could pose a security risk to the mobile application.

Don't let the cyber crooks beat you to the punch!

Let us help you secure your mobile apps before they have a chance to get their grubby little hacker hands on them.

On which mobile platforms can our Penetration Testing be conducted?

Our Mobile App Penetration Tests are customized for your organization and developed for Android and iOS mobile applications.

✅ Android (Google Platform)

Our comprehensive Android app penetration testing covers all major Android platform releases, including 8.1.0 (code name “Oreo”), 8.0, 7.1, 7.0 (code name “Nougat”), 6.0 (code name “Marshmallow”), 5.1, 5.0 (code name “Lollipop”), and even earlier versions like Android 4.4 (“KitKat”).

✅ iOS (Apple platform)

We conduct comprehensive mobile penetration testing of iOS applications based on the iOS platform and SDK, including iOS platform 11.x (for iPhone X, iPhone 8, iPhone 7, iPhone 6, and iPhone 5S), iOS platform 10.x (for iPhone 7, iPhone 6S, iPhone 6, iPhone 5S, and iPhone 5), and earlier versions such as iOS platform 9.x (for iPhone SE, iPhone 6S, iPhone 6, iPhone 5S, and iPhone 4S), and more.

Windows Mobile (Microsoft platform)

Microsoft ended support for Windows 10 Mobile on December 10, 2019, and there are no longer any security updates or patches available for this platform. As a result, we do not offer mobile penetration testing services for Windows 10 Mobile apps. We recommend that you migrate your mobile app to a supported platform, such as Android or iOS.

Word on the street

We're not like average security penetration testing companies. We've earned a reputation for delivering tailored solutions to businesses of all sizes. From mom-and-pop shops to tech startups, our expertise keeps your data safe and sound. Our clients appreciate our customized approach and commitment to transparency. Join the Nextdoorsec fam, one of the reliable vulnerability assessment companies and rest easy knowing your security is in good hands.

Nextdoorsec is an exceptional security company that provides thorough and detailed reports that are easy to understand. Their team is highly knowledgeable and responsive, always willing to answer any questions and provide guidance on how to properly address security vulnerabilities according to industry best practices. With Nextdoorsec's help, we were able to identify and address previously undetected security gaps in our systems, giving us greater confidence in our overall security posture. We highly recommend Nextdoorsec for any organization looking to improve their security posture and protect their valuable assets.

Pieter van der Meer
Cloud Architect

Nextdoorsec provided our organization with top-notch security services. Their team was incredibly thorough and professional, and their level of communication was outstanding. They kept us informed at every step of the process and were always available to answer any questions we had. We were particularly impressed with their commitment to transparency and their ability to provide actionable recommendations for improving our security posture. We would highly recommend Nextdoorsec to any organization looking to enhance their security and protect their valuable assets.

Lars Jansen

Contact Us


Antwerp, Belgium

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