A mobile application can pass functional testing and still expose credentials, backend APIs, locally stored information, or executable logic to attackers. Security failures are often distributed across authentication, communication, storage, third-party components, and the compiled binary, which means a single perimeter control cannot address every attack path.
For security teams, the OWASP mobile top 10 provides a practical way to classify these weaknesses according to how mobile applications are built and attacked. The 2024 release covers credential misuse, supply-chain exposure, authorization failures, unsafe validation, communication weaknesses, privacy controls, binary protection, configuration, local storage, and cryptography.
What the 2024 Risk Categories Reveal About Mobile Attacks
The current list differs significantly from its 2016 predecessor. Code tampering and reverse engineering previously appeared as individual categories, while the newer framework places stronger attention on credential handling, software dependencies, privacy, and binary safeguards. This reflects an application environment where mobile clients continuously exchange sensitive information with APIs and depend on external libraries.
A useful security review therefore needs to examine more than source-code vulnerabilities. It should consider what happens when an attacker extracts the APK, analyzes the IPA, controls the device, intercepts communication, manipulates application execution, or obtains data stored locally. The ten categories provide separate entry points for assessing those scenarios.
The 2024 categories are:
- M1: Improper Credential Usage
- M2: Inadequate Supply Chain Security
- M3: Insecure Authentication/Authorization
- M4: Insufficient Input/Output Validation
- M5: Insecure Communication
- M6: Inadequate Privacy Controls
- M7: Insufficient Binary Protections
- M8: Security Misconfiguration
- M9: Insecure Data Storage
- M10: Insufficient Cryptography
Importantly, these risks are connected. An exposed API key can enable unauthorized requests, while weak authentication can make those requests more damaging. Similarly, insufficient binary protection can help an attacker locate sensitive functions that are later manipulated through debugging, hooking, or runtime instrumentation.
How Credential, Supply Chain, and Access Failures Become Exploitable
Credential exposure begins when secrets are placed where an attacker can retrieve them. Hardcoded API keys, authentication tokens, embedded passwords, or improperly protected cryptographic material can become visible through decompilation or runtime analysis. Once extracted, those credentials may allow an attacker to interact with services outside the legitimate application workflow.
Supply-chain exposure introduces another route. Mobile applications commonly rely on SDKs, frameworks, libraries, build tools, and external components. A vulnerable or malicious dependency can introduce behavior that the application team did not write directly. Authentication and authorization failures then compound the problem when backend systems inadequately verify who is requesting a protected operation.
M1: Improper Credential Usage
Credentials should not become reusable assets simply because someone can inspect the application package or runtime process. Protecting API keys, authentication tokens, and encryption keys reduces the chance that application analysis turns into backend access. Sensitive credentials also require appropriate handling throughout their lifecycle rather than simple concealment in code.
M2: Inadequate Supply Chain Security
A secure application can inherit weaknesses through third-party code. Development teams need visibility into dependencies, SDK updates, component provenance, and known vulnerabilities before software reaches production. Supply-chain controls should extend into build and release processes because compromised components can enter an application before users ever install it.
M3: Insecure Authentication and Authorization
Authentication establishes identity, while authorization determines permitted actions. Weak session handling, inadequate server-side verification, or misplaced trust in client-side decisions can allow attackers to impersonate users or access restricted functions. Critical authorization decisions should therefore remain enforceable even when the mobile client is manipulated.
M4: Insufficient Input and Output Validation
An application should not trust data merely because it originates from its own interface. Malformed input can be sent directly to APIs without using legitimate screens at all. Validation needs to cover data type, format, range, expected structure, and output handling so crafted requests cannot exploit assumptions inside application or backend logic.
M5: Insecure Communication
Sensitive traffic becomes vulnerable when applications inadequately protect communication with remote services. Attackers on hostile networks may attempt interception or modification through man-in-the-middle techniques. TLS, appropriate certificate validation, secure API communication, and certificate pinning can reduce opportunities to observe or manipulate protected exchanges.
M6: Inadequate Privacy Controls
Privacy failures concern how personal information is collected, processed, shared, retained, and exposed. Even technically functional security controls cannot compensate for unnecessary data collection or inappropriate handling. Mobile teams need to understand which sensitive information reaches the device and whether every use of that information is necessary.
Why Binary Protection Matters After an App Leaves Development
M7 is particularly important because mobile applications are distributed directly to devices that developers do not control. An attacker can obtain the same executable package as a legitimate user and examine its DEX bytecode, native libraries, resources, strings, or application logic. Static analysis can then reveal useful information for deeper attacks.
Binary-oriented controls can address:
- Reverse engineering of application logic
- Unauthorized modification and repackaging
- Debugger-assisted process inspection
- Runtime hooking and instrumentation
- Dynamic memory modification
- Extraction of information from process memory
This distinction between static and runtime protection matters. Obfuscating code does not automatically stop an attacker from attaching instrumentation after launch. Conversely, detecting a debugger does not protect poorly stored credentials. Several controls are required because different techniques target different stages of application execution.
Storage, Configuration, and Cryptography Need Separate Controls
Security misconfiguration can expose functionality even when application code itself contains no obvious flaw. Debug settings, excessive permissions, improperly configured components, exposed endpoints, or unsafe platform options may create unnecessary attack surfaces. Production builds should therefore be reviewed for settings that differ from the intended security posture.
For sensitive mobile data, relevant safeguards include:
- Encryption for information stored locally
- Protection for API and authentication tokens
- Secure handling of encryption keys
- Integrity checks for application resources
- Runtime protection for generated information
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Final Thoughts
What happens when a compliant application reaches a device where the operating environment itself cannot be trusted? Security then has to continue beyond vulnerability testing. The OWASP framework helps teams identify where weaknesses exist, while application hardening and runtime monitoring help address attack techniques that emerge after distribution.
For organizations extending protection into that post-release stage, Doverunner provides Android and iOS security capabilities including code and integrity protection, runtime self-protection, anti-debugging, root and jailbreak detection, emulator detection, anti-hooking, memory safeguards, network-sniffing detection, data encryption, and hacking activity monitoring. These controls help protect deployed applications where binary analysis and runtime manipulation actually take place.