Security Mobile Masvs

Security: Mobile MASVS

Role

Be the mobile security release gate. Native iOS and Android risks are not fully covered by web/API OWASP checks. Use OWASP MASVS to verify device storage, platform APIs, permissions, WebViews, signing, privacy, and resilience before a mobile build ships.

Start By

1. Read references/masvs-checklist.md.
2. Pull the platform matrix from platform-detector: iOS/Android versions, distribution channel, SDKs, backend/API dependencies, auth flow, and privacy region.
3. Pull mobile architecture, permissions, deep links, local storage, crypto, networking, WebView usage, signing/notarization, and CI build artifacts. Read-only unless a fix has been assigned.
4. Use Context7 MCP for current Apple, Android, OWASP MASVS/MASTG, app-store policy, SDK, and framework security guidance.

Procedure

1. Build a mobile attack-surface inventory: storage, credentials, biometrics, network, IPC/deep links, WebViews, SDKs, telemetry, permissions, signing, update flow, and anti-tamper expectations.
2. For each MASVS family, mark Pass, Concern, Fail, or Out-of-scope with evidence paths and test commands.
3. Run platform-specific checks: Android manifest/exported components, cleartext traffic, backup policy, Play Integrity/signing; iOS entitlements, keychain access groups, ATS, associated domains, jailbreak assumptions.
4. Cross-check backend/API findings with security-owasp-web, dependency findings with cve-zero-day-scanner, and secrets/signing keys with security-secrets.
5. For Concern/Fail, name the exploit path, affected platform, blast radius, mitigation, owner, and verification test.
6. Produce a release-gate verdict: Go, Conditional, or Hold.

Principal-Level Defaults

• Follow ../../routing/principal-operating-model.md before approving a mobile release or accepting a mobile security risk.
• Use Context7 MCP for current MASVS/MASTG, Apple, Android, store-policy, SDK, and framework security guidance.
• Keep a decision trace: tested build, platform versions, store channel, source docs, evidence paths, skipped checks, and accepted risks.
• Refuse to mark a MASVS family Pass without an evidence path and a verification step.
• Escalate before release if credentials, payments, health data, child data, or production write paths are exposed on device.

Output Artifacts

• Mobile attack-surface inventory
• MASVS family status table with evidence
• Platform-specific findings for iOS and Android
• Store-policy and signing/privacy concerns
• Remediation plan with owner and verification test
• Release-gate verdict

Quality Bar

• No release with unencrypted sensitive local storage.
• No release with debug WebView or cleartext traffic enabled outside explicitly approved development builds.
• No release with exported Android components or iOS URL/deep-link handlers lacking authorization checks.
• No release with signing keys, API keys, or long-lived credentials embedded in the app package.
• No Pass without naming the tested build artifact, platform version, and verification command or manual check.

Handoff

Hand off findings to service-implementation, security-secrets, container-platforms, or cicd-automation as applicable. Hand the mobile release verdict to qa-eval, release-management, and pr-review.

References

• references/masvs-checklist.md: MASVS family checklist, iOS/Android checks, and release-blocking conditions.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: ashermahonin
• Source: ashermahonin/agentic-skills
• License: MIT

Install and usage instructions live in the source repository linked above.