Since mobile app attack surfaces expand fast and large, the risks associated with them, such as the theft of customer's data, interceptions of transactions, credential stealing, and compromising of financial information, all of these skyrocket too. Moreover, the RBI continues tightening up the rules on digital payment security. RB-IOS 2026 in July was needed because of the unprecedented increase in complaints about mobile banking fraud.
Companies are now aware that attackers use sophisticated malicious software and dynamic instrumentation frameworks to evade simple measures, and that regular penetration testing is not enough anymore. So, BFSI companies need a layered security strategy including continuous app and runtime security.
Our 25-point mobile application security checklist works great for the BFSI industry. It’ll work across your entire financial ecosystem and make sure that your defenses stay resilient against modern threats.
What Is a Mobile App Security Checklist?
A mobile app security testing checklist is a structured, systematic framework that is used by security teams to assess the security of an application against known and emerging threats. The main goal is to make sure that there is no critical vulnerability that is missed while working through the Secure Software Development Life Cycle (SDLC).
Security teams go through a mobile app security audit checklist when doing initial assessments, to make sure coding practices, network configurations and communication with the back end are correct. It is essential that there is a distinction between point-in-time security testing and continuous security protection. A checklist indicates static issues before release, while active runtime mechanisms prevent threats on the user's device after the release.
A detailed Mobile App Security Assessment Checklist should be applicable to both Android and iOS platforms, guaranteeing uniformity in protection. It has to consider a number of layers such as:
Application security and device security
The security models used for authentication and authorization
Improving data security and API infrastructure
Network security configurations
Security at the runtime and code level both at runtime
Other standards and third-party dependencies are also taken into account
Why Do BFSI Mobile Applications Need Rigorous Security Testing?
The stakes for an app for a bank or fintech are very high. Once the hacker is successful, it could be used to penetrate sensitive financial operations, customer PII (Personally Identifiable Information), bank account details and payment credentials.
Threat actors exploit UPI to steal authentication credentials, steal loan data, intercept UPI transactions and relay private investment information. Fraud and account takeover (ATO) are their ultimate goals, directly contributing to the ultimate financial losses, and irreparable damage to customer trust.
Moreover, financial app security testing is a mandatory part of any regulatory criteria. There is an expectation that regulatory bodies will see evidence of ongoing compliance to very high data protection expectations to guarantee business continuity. To protect their digital banking services, BFSI organizations need to take a defense-in-depth approach and assume that the base mobile device is compromised in some way.
25 Mobile App Security Tests Every BFSI App Should Pass
A robust mobile application security testing checklist must systematically validate every defense mechanism. Here are the 25 critical tests every BFSI application must clear.
1. Secure Authentication Test
What to test: Password authentication, OTP authentication protocols, MFA implementation, biometric authentication strength, authentication bypass vulnerabilities, and brute-force protection.
Expected Control: Strong, risk-based authentication tailored to transaction sensitivity.
2. Authorization & Access Control Test
What to test: Role-based access logic, privilege escalation paths, unauthorized data access, object-level authorization (to prevent IDOR), and backend API authorization.
Expected Control: Strict server-side authorization and absolute adherence to the principle of least privilege.
3. Secure Data Storage Test
What to test: Unencrypted local databases (SQLite), shared preferences, cached data, application logs, temporary files, and sensitive application data storage.
Expected Control: Sensitive information must never be stored insecurely or in plaintext on the local device.
4. Encryption Test
What to test: Cryptographic protection of data at rest, data in transit, the strength of encryption algorithms (e.g., AES-256), secure key management, and cryptographic implementation flaws.
Expected Control: Strong, industry-standard encryption and secure cryptographic key handling.
5. Secure API Communication Test
What to test: API authentication protocols, authorization checks, strict request validation, response validation to prevent data leakage, and unauthorized API exposure.
Expected Control: Utilizing robust API security to guarantee fully authenticated and authorized communication channels.
6. SSL/TLS Configuration Test
What to test: Proper TLS configuration, correct certificate validation, the deprecation of weak protocols (like TLS 1.0/1.1), removal of insecure cipher suites, and secure certificate handling.
Expected Control: Utilization of modern, highly secure communication protocols exclusively.
7. SSL Certificate Pinning Test
What to test: Proper certificate pinning implementation, rigorous certificate validation, resilience against pinning bypass attempts, and protection against runtime interception (MITM attacks).
Expected Control: Proper certificate validation coupled with active runtime detection of interception tools.
8. Root Detection Test – Android
What to test: Application behavior on rooted devices, deliberately modified environments, active debug environments, and heavily compromised endpoints.
Expected Control: Appropriate, risk-based response (such as immediate session termination) when exposed to compromised OS environments.
9. Jailbreak Detection Test – iOS
What to test: Resilience on jailbroken devices, heavily modified iOS runtime environments, unauthorized system access attempts, and altered application behavior.
Expected Control: Immediate detection and an appropriate application restriction or shutdown response.
10. Code Obfuscation Test
What to test: Reverse engineering resistance, the concealment of sensitive business logic, the cloaking of application secrets, and overall source code readability post-compilation.
Expected Control: Implementing robust Code Obfuscation for comprehensive mobile app code protection to deter decompilation and IP theft.
11. Anti-Tampering Test
What to test: Whether attackers can modify application binaries, repackage applications, maliciously change application logic, or bypass native security controls.
Expected Control: Uncompromised application integrity backed by active anti-tampering detection mechanisms.
12. Reverse Engineering Test
What to test: APK/IPA static analysis, decompiled code exposure, visibility of application logic, hardcoded secrets, and exposure of internal API endpoints.
Expected Control: Minimized exposure of sensitive business logic and backend secrets to static analysis tools.
13. Runtime Manipulation Test
What to test: Method hooking attacks, dynamic instrumentation, live memory manipulation, runtime modification, and active debugging sessions.
Expected Control: Proactive runtime attack detection ensuring immediate application protection.
14. Debugging & Instrumentation Detection Test
What to test: Whether attackers can successfully attach debuggers, utilize instrumentation frameworks (like Frida), deploy hooking tools, or run runtime analysis tools.
Expected Control: Advanced anti-debugging and anti-instrumentation controls active at all times.
15. WebView Security Test
What to test: Unsafe JavaScript interfaces, improper URL handling, web-to-native communication channels, exposure to untrusted content, and sensitive data exposure via XSS.
Expected Control: Strictly secure WebView configuration and rigorous content validation.
16. Deep Link Security Test
What to test: Vulnerabilities in deep links, universal links, internal app routing, authentication flows triggered via links, and malicious redirects.
Expected Control: Secure deep-link validation and rigorous authorization checks before executing routed actions.
17. Inter-Process Communication (IPC) Test
What to test: (For Android specifically) Intents, exported components, broadcast receivers, content providers, and activity permissions.
Expected Control: Proper component permissions and strict data validation for all IPC to prevent malicious cross-app communication.
18. Third-Party SDK Security Test
What to test: The security posture of integrated analytics SDKs, payment SDKs, advertising SDKs, authentication SDKs, and open-source libraries.
Expected Control: Regular dependency updates and comprehensive SDK security assessments before integration.
19. Hardcoded Secrets Test
What to test: Comprehensive search for API keys, administrative passwords, cloud tokens, encryption keys, embedded credentials, and private configuration files.
Expected Control: Secrets must be managed securely outside of the application code via secure enclaves or backend vaults.
20. Screenshot & Screen Recording Protection Test
What to test: Exposure of sensitive screens, account information, payment details, OTPs, and transaction information to background recording apps.
Expected Control: Appropriate OS-level protection (like FLAG_SECURE on Android) against unauthorized screen capture and data leakage.
21. Overlay Attack Protection Test
What to test: Susceptibility to malicious overlays (screen hijacking), credential capture trojans, transaction manipulation interfaces, and UI deception.
Expected Control: Real-time overlay detection backed by active Runtime protection.
22. API Abuse & Rate-Limiting Test
What to test: Vulnerability to excessive requests, automated credential stuffing attacks, brute-force attempts, bot activity, and business logic abuse.
Expected Control: Strict rate limiting, constant endpoint monitoring, and automated abuse prevention.
23. Business Logic Security Test
What to test: Transaction manipulation (altering amounts), parameter modification, workflow bypass techniques, flawed authorization logic, and improper transaction validation.
Expected Control: Strong, foolproof server-side business logic validation that does not inherently trust client input.
24. Third-Party Dependency & Supply Chain Test
What to test: Detection of outdated libraries, vulnerable dependencies, build pipeline security gaps, compromised open-source components, SDK integrity, and a Software Bill of Materials (SBOM) review.
Expected Control: Continuous dependency tracking and rigorous software supply-chain monitoring.
25. Runtime Protection & Continuous Monitoring Test
What to test: Evaluation of runtime threat detection capabilities, application integrity, resilience to tampering, root/jailbreak detection, suspicious runtime behavior logging, and automated response mechanisms.
Expected Control: Continuous mobile app runtime security rather than relying solely on point-in-time penetration testing.
Android & iOS Mobile App Security Testing
A standardized mobile security checklist must account for the fundamental architectural differences between operating systems.
Android App Security Testing
Android app security testing requires a deep dive into the Android ecosystem. Security teams must execute Mobile app security testing to evaluate APK security, the principle of least privilege in Android permissions, and the safety of exported components. Assessors must test Intents, restrict Content Providers, secure the Android Keystore, validate root detection, thwart runtime manipulation, lock down WebViews, and ensure proper application signing.
iOS App Security Testing
On the other hand, iOS app security testing concentrates more on the Apple ecosystem. It's important for teams to test security of its applications on IPA, make sure cryptographic keys are stored securely in the iOS Keychain, and implement App Transport Security (ATS). Also, iOS evaluations need to certify jailbreak detection algorithms, rigorously manage certificate validation, prevent runtime manipulation (with instruments such as Cycript), secure storage and application integrity via code signing.
API & Backend Security Testing for BFSI Apps
A financial infrastructure is in the back end, while its interface is the mobile app. A comprehensive mobile application security testing checklist needs to include an examination of the backend connections.
Assessors need to verify API authentication and ensure that there are tight authorization restrictions which prevent users from accessing one another's data. This means strong security of OAuth/token, implementing rate limits for automated bots, and strict input validation to prevent injection attacks. Security teams will also need to carefully evaluate the business logic for potential vulnerabilities that could enable transaction authorization circumvention or abuse of the API that exposes data and facilitates bot-driven fraud.
Key Message: If the backend is not highly secure, the mobile application will not be secured. Security testing of mobile clients is not sufficient in the true sense of BFSI mobile app security.
Runtime Security vs Traditional Mobile App Testing
The modern fintech app security checklist relies on a hybrid approach. Traditional testing finds existing flaws, while runtime protection defends against active exploitation.
Security Capability | Traditional Testing | Runtime Protection |
Static code analysis | ✅ | — |
Vulnerability discovery | ✅ | ✅ |
API testing | ✅ | — |
Penetration testing | ✅ | — |
Reverse engineering assessment | ✅ | — |
Runtime attack detection | Limited | ✅ |
Tampering detection | Limited | ✅ |
Instrumentation detection | Limited | ✅ |
Root/Jailbreak detection | Sometimes | ✅ |
Continuous monitoring | ❌ | ✅ |
Real-time response | Limited | ✅ |
Main takeaway: Testing and RASP (Runtime Application Self-Protection) are completely complementary. All BFSI applications should utilize both to achieve a true mobile app runtime security posture.
Common Mobile App Security Risks in BFSI
Failing to adhere to a mobile application security testing checklist leaves institutions exposed to devastating banking app vulnerabilities. The most common BFSI mobile app security threats include Account Takeover (ATO) through credential theft, immediate payment fraud, and severe API abuse leading to massive data leakage.
Furthermore, attackers continually deploy advanced malware capable of reverse engineering apps, executing code tampering, and driving runtime manipulation. Without robust defenses, apps easily fall victim to MITM attacks, screen overlay attacks, phishing campaigns, fake clone applications, and catastrophic third-party SDK and supply chain attacks. These mobile payment security risks dictate that passive defense is an obsolete strategy.
Mobile App Security for UPI, Banking & Fintech Applications
Different sectors of the BFSI industry face unique operational threats. The checklist must be tailored to address the nuanced requirements of each ecosystem perfectly naturally.
UPI & Payment Apps
Ubiquitous apps handle millions of micro-transactions daily. Ensuring flawless PhonePe mobile app security, robust Google Pay mobile app security, and comprehensive Paytm mobile app security is critical to the economy. We also see high-velocity transaction needs driving BHIM app security, Amazon Pay security, MobiKwik app security, and BharatPe app security. For these high-velocity platforms—along with innovators like POP UPI, Kiwi, Jio Payments Bank, and Airtel Payments Bank—the primary focus must be on transaction security, API security, and relentless runtime protection to block device integrity threats and anti-tampering bypasses.
Digital Banking Apps
Core banking apps possess deep access to user financial histories. Traditional institutions must lock down HDFC Bank mobile app security, ICICI Bank mobile app security, Axis Bank mobile app security, and Kotak Mahindra Bank mobile app security to defend massive infrastructures. Additionally, applying a banking app security checklist to maintain rigorous protection across IDFC FIRST Bank app security, Yes Bank mobile app security, SBI, Federal Bank mobile app security, and RBL Bank app security means strictly enforcing customer authentication, account protection, transaction authorization, and data privacy while mitigating immediate runtime threats. The same standards apply to IndusInd Bank, AU Small Finance Bank, Canara Bank, and Bank of Baroda.
Lending & Investment Apps
Investment and lending platforms handle highly sensitive KYC data and extensive portfolios. Platforms must guarantee flawless Navi app security, KreditBee app security, Groww app security, CRED app security, and Bajaj Finserv app security. Additional innovators like Money View, Jupiter Money, Slice, Stashfin, INDmoney, and Aditya Birla Capital Digital must heavily prioritize customer data protection, financial identity protection, API security, active runtime security, and defenses against automated account takeover attempts.
Mobile App Security Compliance Considerations for BFSI
BFSI mobile app security is heavily governed by stringent regulatory frameworks. Ensuring data protection and customer privacy is a legal obligation under evolving regional laws (such as India's DPDP Act and RBI mandates). Regulators expect institutions to enforce secure authentication, strong cryptography (encryption), and zero-trust access control.
Maintaining detailed audit logging and active vulnerability management ensures transparency. Institutions must integrate a secure SDLC, engage in frequent security testing, and maintain rapid incident response protocols. While adhering to this 25-point checklist strengthens your defense, organizations must continuously map these technical controls back to their specific regional compliance and regulatory expectations.
BFSI Mobile App Security Checklist (For CISOs)
Use this concise, actionable pass/fail mobile application security checklist to quickly evaluate your enterprise posture.
Security Test | Pass/Fail |
Authentication | ☐ |
Authorization | ☐ |
Secure Data Storage | ☐ |
Encryption | ☐ |
API Security | ☐ |
TLS/SSL | ☐ |
Certificate Pinning | ☐ |
Root Detection | ☐ |
Jailbreak Detection | ☐ |
Code Obfuscation | ☐ |
Anti-Tampering | ☐ |
Reverse Engineering Protection | ☐ |
Runtime Manipulation Protection | ☐ |
Anti-Debugging | ☐ |
WebView Security | ☐ |
Deep Link Security | ☐ |
IPC Security | ☐ |
Third-Party SDK Security | ☐ |
Hardcoded Secrets | ☐ |
Screen Protection | ☐ |
Overlay Protection | ☐ |
API Abuse Protection | ☐ |
Business Logic Security | ☐ |
Supply Chain Security | ☐ |
Runtime Monitoring | ☐ |
Why Protectt.ai for BFSI Mobile App Security?
Meeting the rigorous demands of this 25-point checklist requires more than fragmented point solutions; it requires a unified, enterprise-grade architecture.
Here is what we offer:
Protectt.ai provides a comprehensive mobile app security ecosystem specifically engineered to address the unique complexities of the BFSI sector.
Our centralized Mobile Application Security Platform natively addresses every layer of modern fintech application security.
To defend your source code from decompilation and intellectual property theft, our CodeProtectt module ensures resilient obfuscation.
When it comes to the execution environment, we deliver unbreachable runtime defense via advanced RASP capabilities, instantly detecting and neutralizing reverse engineering, hooking, and overlay attacks to ensure seamless mobile app runtime security.
Modern financial apps rely heavily on backend communication, and the ApiProtectt engine shields your critical data channels from automated bot abuse and injection attacks.
Additionally, by integrating comprehensive Mobile threat defense through MProtectt Biz Plus and continuous Threat intelligence feeds, Protectt.ai empowers developers to shift left while defending right. Whether you need rapid app security deployment or deep DevSecOps integration, Protectt.ai delivers the ultimate mobile application protection platform to safeguard your financial enterprise.
Conclusion
In light of the continued globalization of digital finance, there is an increased need for rigorous security testing of BFSI mobile applications. The mobile app security checklist should not just limit itself to a scan but go through a thorough process of securing the application, the device, the API, and runtime levels.
Some foundational controls such as authentication, encryption, API security, certificate pinning, anti-tampering, and secure storage should all be a must have for any secure mobile application. Additionally, Android and iOS apps need to have strict testing specific to the platforms and continuously test for any third-party SDK and supply chain risks.
But discovering flaws in an application is just half the problem, which is why traditional pen testing needs to be integrated with continuous mobile runtime protection to prevent attacks on-the-fly. CISOs and technology leaders in BFSIs should create continuous assessments for mobile app security testing, which should be coupled with continuous monitoring.
We strongly encourage BFSI organizations to evaluate their current posture and adopt a layered defense strategy. Your business needs security testing, application protection, and runtime threat detection, all-in-one to ensure complete resilience.
If you need help with this, get in touch with our experts at Protectt.ai and we’ll help you get set up.
Frequently Asked Questions
What is a mobile app security checklist?
It provides a systematic approach consisting of a set of security checks, configurations, and tests to identify and address vulnerabilities before and after the release of a mobile application.
What should be included in a mobile app security checklist?
Data encryption, secure authentication, API security, certificate pinning, anti-tampering, anti-reverse-engineering, root/jailbreak detection, and active runtime monitoring are just some of the items that should be included in a comprehensive mobile app security checklist.
How do you test banking mobile application security?
Testing must involve SAST, DAST, manual mobile application penetration testing, API security validation and dynamic runtime manipulation testing on mobile applications on both Android and iOS platforms.
What security tests should every fintech app pass?
Each and every fintech app should go through tests of secure data storage, strong authorization (to prevent IDOR), certificate pinning resistance, third-party SDK security, and runtime instrumentation resistance.
What are the most common mobile app vulnerabilities in BFSI?
The most common vulnerabilities are secrets in the code, weak API endpoints, unencrypted local storage, broken session management, and the ability to be overlaid and MITM-attacked.
How often should banking apps be security tested?
Security testing is an ongoing process. A daily scan, which uses automated scanning, should be part of the CI/CD pipeline and deep enough; a manual mobile app vulnerability assessment and penetration test should be performed before each major release.
What is mobile application penetration testing?
Mobile app pen testing is a simulated attack on a mobile app. Using a mobile penetration testing checklist helps exploit vulnerabilities including business logic flaws, insecure APIs, and other issues that automated scanners generally do not detect.
Why is certificate pinning important for banking apps?
By binding the certificate to the application, the application will only accept connections from a server with a certificate specifically listed in the whitelist, thus thwarting attackers from using a fake certificate.
How do you test Android mobile app security?
Android mobile app security testing focuses on APK decompiling, validating IPC components exported, examining Android Manifest permissions, testing for Keystore encryption, and testing against root hiding frameworks, for example Magisk.
How do you test iOS mobile app security?
The iOS application security testing process includes testing application encryption in an IPA file, checking on the security of data stored in the Keychain, ensuring that App Transport Security (ATS) is being enforced, and testing for resistance to App Transport Security (ATS) bypass tweaks and jailbreak bypass.
What is runtime protection in mobile applications?
It is an active defense layer which is integrated into the app and continuously monitors the execution environment, identifying and preventing malicious activities (such as hooking, debugging etc) as they occur.
What is RASP?
Runtime Application Self-Protection (RASP) equips RASP mobile applications with their own built-in defenses against cyber attacks, meaning external security products are not solely relied upon.
How can BFSI companies protect mobile apps from runtime attacks?
Incorporating an integrated dedicated mobile RASP solution that offers anti-tampering protection, overlay detection and real-time response to instrumentation frameworks such as Frida.
Is penetration testing enough for mobile banking apps?
No. Penetration testing is a static, point-in-time check. Attackers exploit apps dynamically, requiring banks to pair testing with continuous mobile application runtime protection.
How can fintech companies secure mobile applications?
To achieve a Zero Trust approach, fintechs need to take a Zero Trust stance, establish a secure SDLC process, conduct regular fintech app security testing (including API tests), and deploy a full fintech app security solution that incorporates threat intelligence.
What is the difference between mobile app security testing and runtime protection?
Testing finds code and configuration errors prior to release, while runtime protection actively prevents threats, malware and tampering attempts while the user is in the act.