Mobile Application Security Testing Services
Review security risk across Android and iOS applications, their platform behavior and the services they trust. Each engagement identifies the approved build, environment and client-side boundary while keeping backend API coverage separate.
- Support safer Android and iOS release decisions
- Separate client-side findings from backend API risk
- Give mobile teams practical evidence for remediation planning
For teams preparing or evolving mobile products
The assessment is intended for product owners and engineers who need a defined review of an approved mobile build and its platform behavior. SignX supports remote security assessments for international clients, subject to technical feasibility and agreed engagement scope.
Launch preparation
Teams preparing a mobile launch with sensitive identity, data or transaction flows.
Sensitive applications
Fintech, marketplace, enterprise or customer-service products handling important user information.
Security requirements
Product owners responding to customer, partner or platform security requirements.
Major releases
Engineering teams assessing a material mobile release or an inherited application.
Mobile security context for product and engineering teams
A platform-specific assessment helps teams understand risk in an approved mobile build without presenting one platform's coverage as evidence for another.
Platform clarity
Keep Android and iOS findings tied to the exact build and operating environment that was assessed.
Ownership clarity
Separate mobile-client observations from backend services that require their own API scope.
Release decisions
Provide product and engineering owners with prioritized evidence for launch and remediation planning.
Mobile platforms
SignX's in-house security team supports Android and iOS application assessments. The exact build, device conditions, accounts, test data and environment are agreed for each engagement.
Android
Assessment of an approved Android application build within the agreed environment and test conditions.
iOS
Assessment of an approved iOS application build within the agreed environment and test conditions.
Delivered by SignX's in-house security team
Mobile assessment activities
These activities are available capabilities. The specific build, device conditions, accounts, test data and environment remain engagement-specific.
Local data storage
Assessment of security controls around locally stored application data.
Authentication and sessions
Assessment of approved authentication and session behavior in the mobile application.
Platform interaction
Assessment of approved Android or iOS platform interactions.
Network communication
Assessment of the application's network communication security within scope.
Available activities are selected in the written scope and quotation
Risk across the app, platform, device and network boundary
The final scope determines what is tested. These areas show the kinds of mobile risk a properly authorized engagement may examine.
Local data storage
Sensitive information in application files, logs, backups, caches or local databases.
Identity and sessions
Authentication, session lifecycle or device-binding behavior in approved workflows.
Network communication
Transport protection, certificate validation and data exchanged with supporting services.
Platform interaction
Permissions, deep links and inter-process communication exposed through the mobile platform.
A named build, platform and backend boundary
Android and iOS are supported. The application version, build type, distribution method, accounts and device conditions are agreed per engagement. Source-code review, advanced reverse engineering, rooted or jailbroken device testing and tamper-resistance testing are not included. Backend API coverage requires a separate scope.
Platforms and builds
Approved Android or iOS versions, application builds, distribution channels and test environments.
Accounts and devices
Test roles, test data, approved device conditions and relevant platform configuration.
Client and API boundary
Mobile storage, platform behavior and communication separated from any supporting API assessment.
Explicit limitations
Source access, reverse engineering, modified devices, tamper resistance and excluded dependencies.
From build confirmation to mobile-specific reporting
A defined sequence keeps platform coverage, device conditions and backend boundaries visible throughout the engagement.
Confirm boundaries
Record platforms, builds, environments and backend scope.
Prepare access
Establish accounts, device conditions and test-data rules.
Assess
Examine storage, platform interaction, communication and approved controls.
Validate
Confirm findings and separate client-side risk from API risk.
Report and read out
Deliver prioritized findings and review remediation.
Agree retesting
Retesting arrangements, including scope, timing and any applicable fees, are agreed as part of the project quotation.
Standard assessment deliverables
Seven standard deliverables for each scoped assessment
Severity model: CVSS 4.0 + Business Context. CVSS v4.0 is applied to technical vulnerabilities when it is suitable and supported by the available evidence. Technical severity, affected assets and exploit conditions are recorded separately from business impact, asset criticality and remediation priority. When CVSS is unsuitable or the evidence is insufficient, the report uses a reasoned qualitative severity and clearly states its basis.
- Executive summary for business and technical stakeholders
- Documented assessment scope, exclusions, environments, dates and testing limitations
- Validated technical findings with appropriately redacted supporting evidence
- Severity ratings and business-risk prioritization using the approved CVSS 4.0 + Business Context model where applicable
- Actionable remediation recommendations
- Technical assessment report and client readout session
- Retesting arrangements documented according to the project's agreed scope and quotation
Questions before a mobile assessment
The answers keep platform, build and backend coverage explicit while avoiding unsupported certification or capability claims.
Which mobile platforms does SignX test?
SignX's in-house team supports Android and iOS application security testing. Each platform, build and environment must be named in scope; testing one shared codebase does not establish equivalent coverage.
Does mobile testing include the backend API?
Not by default. The API should be a named scope item with its own roles, endpoints and test controls.
Does the assessment include source review or advanced reverse engineering?
No. Source-code review, advanced reverse engineering, rooted or jailbroken device testing and tamper-resistance testing are not included in this service.
Does the report certify the app as compliant with a mobile standard?
No. The engagement is not a certification and does not guarantee that no vulnerability exists.
Connect mobile findings to product engineering
Existing SignX software services remain the primary offer. Mobile-client and backend remediation should retain clear ownership and scope.
Mobile App Development
Design and build native and cross-platform mobile products.
Explore service02Custom Software Development
Plan and evolve connected application backends and workflows.
Explore service03API Security Testing
Assess approved REST, GraphQL and SOAP backend interfaces under a separately defined scope.
Explore serviceDiscuss your mobile security assessment
Share the target platform, build type, environment and backend boundary. We will use that information to prepare a written scope and quotation.