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Grok+17 agentsios app security and rbac
Hardens iOS applications with production-grade security patterns, Keychain implementation, and tenant-aware RBAC.
$15
ios app security and rbac
Example session with this skill installed
Review my iOS auth flow: I'm storing the JWT in UserDefaults for speed, and using a 'isAdmin' boolean in my User struct to show/hide the dashboard. Is this safe?
- Read your context and instructions
- Compiled the ios app security
- Generated the document
I have reviewed your authentication flow. Storing sensitive tokens in UserDefaults and relying on client-side booleans for authorization are high-risk patterns that violate iOS security standards.
iOS Security Audit: Authentication & RBAC
| Component | Current State | Risk Level | Recommendation |
|---|---|---|---|
| Token Storage | UserDefaults | CRITICAL | Move JWT to Keychain Services with kSecAttrAccessibleAfterFirstUnlock. |
| Authorization | Client-side isAdmin flag | HIGH | Enforce all admin actions server-side. Use the UI flag only for view logic. |
| Data Protection | Persistent Plist | MEDIUM | Implement DataProtection keys to encrypt the local cache when the device is locked. |
| Logging | Unverified | MEDIUM | Ensure the JWT or PII is never passed to os_log or third-party analytics. |
Implementation Guide: Secure Keychain Storage
import Foundation
import Security
struct KeychainHelper {
static func saveToken(_ token: String, account: String) {
let data = Data(token.utf8)
let query: [String: Any] = [
kSecClass as String: kSecClassGenericPassword,
kSecAttrAccount as String: account,
kSecValueData as String: data,
kSecAttrAccessible as String: kSecAttrAccessibleAfterFirstUnlock
]
SecItemDelete(query as CFDictionary)
SecItemAdd(query as CFDictionary, nil)
}
}
Next steps
- Refactor the
Userstruct to treat local roles as strictly informational; verify thesuborrolesclaim in the JWT on every API call. - Implement a
Privacy.appmgmtmanifest to declare why your app accesses the network for authentication. - Add a jailbreak detection check via
App Attestbefore allowing the JWT to be exchanged for high-value session data.
ios-app-security-and-rbac.pdf
PDF · document
Example file from a real run - the skill writes it into your workspace.
Connects securely to your tools. The creator never sees your data.
What you get
About this skill
Mobile security failures lead to data leaks, bypassed paywalls, and compromised user trust. This skill provides a structured framework for securing iOS applications, focusing on the critical intersection of device-side hardening and server-enforced authorization.
What it does
- Hardens storage by implementing Keychain and Secure Enclave patterns to protect secrets and PII from unauthorized access.
- Architects RBAC to ensure roles, permissions, and tenant isolation are enforced correctly at the client level without replacing server-side truth.
- Validates device integrity using App Attest and Trust Insights to detect jailbroken or tampered environments.
- Secures AI integrations by auditing App Intents, Siri actions, and prompt injection risks within the Apple ecosystem.
- Enforces privacy compliance through strict privacy manifests and data protection classification audits.
How it works
- Analyze requirements including auth models, tenant structures, and compliance needs.
- Review threat models to identify trust boundaries between the device, API, and Secure Enclave.
- Audit implementation against quality standards for Keychain usage, certificate pinning, and offline cache expiry.
- Generate evidence including security checklists, RBAC matrices, and iOS-specific test packs.
Frameworks & tools
Specifically designed for iOS development using Swift, SwiftUI, and Objective-C. Supports Apple-native security technologies like Secure Enclave, App Attest, Keychain Services, and App Intents.
Why this beats prompting it yourself
Generic AI often suggests insecure patterns like storing tokens in UserDefaults or trusting client-side role flags. This skill enforces non-negotiable iOS security principles, ensuring your app passes rigorous audits and protects sensitive user data.
Use cases
- Auditing an existing Swift codebase for Keychain and logging vulnerabilities.
- Designing a multi-tenant RBAC system for a B2B iOS application.
- Securing Siri App Intents and AI tool calls against prompt injection.
- Implementing certificate pinning and App Attest for high-stakes financial apps.
Known limitations
Does not provide backend server implementation code. Cross-platform Android-first RBAC is out of scope; use platform-specific tools for non-Apple ecosystems.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
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- 2
Unzip into your skills folder
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- 3
Ask your agent to use it
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- Passed all security checks, Safe to install