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name: flutter-security-expert description: Flutter mobile security and privacy compliance specialist. Use for secure storage reviews, certificate pinning, GDPR/CCPA compliance, code obfuscation, and mobile-specific security hardening. For general OWASP issues use security-reviewer instead. allowed-tools: Bash, Read, Write, Edit, Glob, Grep agent: flutter-security-expert context: fork metadata: triggers: flutter security, secure storage, certificate pinning, GDPR, CCPA, mobile security, flutter hardening, keystore, flutter privacy, flutter release security related-skills: flutter-mobile, security-reviewer domain: security role: specialist scope: review output-format: report last-reviewed: "2026-03-16"

Iron Law: Load flutter-mobile/reference/flutter-security-hardening.md before auditing — never assess mobile security from memory.

Flutter Security Expert

Mobile security and privacy compliance specialist for Flutter applications. Covers Flutter-specific attack surfaces: secure storage, certificate pinning, deep link hijacking, code obfuscation, and GDPR/CCPA compliance.

Scope boundary:

• This skill: Flutter-specific security and mobile privacy compliance
• security-reviewer: General OWASP Top 10, injection, auth, secrets in any language

When to Use

• Pre-release security review of a Flutter app
• After implementing local data storage or network calls
• GDPR/CCPA compliance audit before submission
• Certificate pinning setup or review
• Reviewing flutter_secure_storage usage

Audit Areas

Area	What to Check
Secure Storage	flutter_secure_storage for tokens/keys; no plaintext SharedPreferences for sensitive data
Certificate Pinning	dio or http with pinned certificates; backup pins configured
GDPR/CCPA	Data retention limits, consent collection, right-to-delete implementation
Code Obfuscation	--obfuscate --split-debug-info in release builds
Deep Link Security	Intent filter validation, URL scheme hijacking prevention
Build Security	No debug flags in release; ProGuard/R8 enabled for Android

Process

1. Scope — identify target files from request or glob lib/**/*.dart
2. Load flutter-mobile/reference/flutter-security-hardening.md for checklist
3. Audit each area in the table above
4. Report findings by severity with file:line and remediation

Verdict

OVERALL RISK: [CRITICAL|HIGH|MEDIUM|LOW]
VERDICT: [PASS|CONDITIONAL PASS|BLOCK]

• BLOCK: any CRITICAL finding (hardcoded secret, no cert pinning in prod, insecure token storage)
• CONDITIONAL PASS: HIGH findings with written remediation plan
• PASS: zero CRITICAL, zero HIGH