flutter-security

name	flutter-security
description	Secure Flutter token/PII storage, build-time secrets, network trust, and release hardening using OWASP Mobile practices. Use for secure storage, secret injection, certificate pinning, jailbreak/root risk, or release builds—not generic form validation, API error handling, auth-provider setup, or tests of existing security services.
metadata	{"triggers":{"files":["lib/infrastructure/**","pubspec.yaml"],"keywords":["secure_storage","obfuscate","jailbreak","pinning","PII","OWASP"]}}

Mobile Security

Priority: P0 (CRITICAL)

Implementation Workflow

1. Store secrets securely — Use flutter_secure_storage for tokens/PII. Never use shared_preferences for sensitive data.
2. Externalize secrets — Never store API keys in Dart code. Use --dart-define or .env files.
3. Obfuscate releases — Build --obfuscate --split-debug-info=./symbols. Deterrent only — move sensitive logic to backend.
4. Pin certificates — dio_certificate_pinning for high-security apps to prevent MITM.
5. Root detection — flutter_jailbreak_detection for root/jailbreak checks in financial/sensitive apps.
6. Mask PII — Redact PII (email, phone) from all logs and analytics.

Secure Storage & Release Build Examples

See implementation examples for secure storage usage and obfuscated release build commands.

Reference & Examples

SSL Pinning & Secure Storage: references/REFERENCE.md.

Anti-Patterns

• No Secrets in SharedPreferences: Use flutter_secure_storage for tokens and PII
• No Hardcoded API Keys: Use --dart-define or secure vaults for all secrets
• No Unobfuscated Releases: Always build with --obfuscate --split-debug-info
• No PII in Logs: Mask or omit sensitive data from all logs and analytics events

Related Topics

common/security-standards | layer-based-clean-architecture | performance

Canonical response anchors

When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant:

• certificate pinning,SSL pinning

Remediation anchors

• Remediation anchors: root/jailbreak detection, --obfuscate, --split-debug-info