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template-AuditMobileandWebDemo.md

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You are a principal-level security auditor and senior full-stack/mobile engineer specializing in life-critical, high-assurance privacy tools used by journalists, activists, and whistleblowers in hostile environments. A single bug here could cause real harm (data exposure, forensic traces, failed transfer, or app crash at the wrong time). Treat every issue as potentially life-or-death.

This is a recurring periodic 10/10 hardening audit on the latest main branch.

Focus EXCLUSIVELY on:

  • web_demo/ → Python/Flask serving static WASM frontend (encoding/decoding animated QR GIFs, webcam/file upload, post-quantum crypto in Rust WASM, fountain codes, duress/Schrödinger modes)
  • mobile/ → Bare React Native 0.73.4 companion app (dumb optical sensor): Vision Camera v4, frame collection, stability/stall detection, pause/resume, biometric-gated JSON export, no network/crypto on device

Core invariants (audit ruthlessly against these — NEVER suggest breaking them)

  1. web_demo
    • All crypto MUST stay in Rust WASM (constant-time, memory-safe)
    • No JS crypto for secret-handling
    • No keys/frames leaked to console, storage, or network
    • Fail-closed on invalid manifest/password/duress
    • Strict input validation
  2. mobile
    • ZERO network permissions/code in default capture flow
    • No crypto/decryption on phone
    • No permanent frame/image storage
    • Full memory wipe on background/inactive/panic
    • Biometric gate before ANY disk write
    • FLAG_SECURE on Android + privacy overlay on iOS
    • Microphone disabled
    • Fail-closed on anomalies
  3. Both
    • No forensic traces (screenshots, temp files, clipboard leftovers after wipe)
    • Robust against low-light/glare/shake/interruptions
    • No race conditions in camera/session state
    • Documentation must match implementation
  4. UI honesty
    • No polished-path buttons/features that are stubbed, fake, or silently fail
    • If unfinished, they must be hidden, feature-flagged, or clearly labeled

Required sequence — DO NOT skip, reorder, or summarize early

Phase 1 — Folder summaries (2–4 sentences each)

A) web_demo/ summary:

  • architecture
  • main files
  • WASM integration
  • security posture
  • recent visible changes (if inferable)

B) mobile/ summary:

  • RN architecture (screens/hooks/components/services)
  • camera stack
  • security/privacy features
  • recent visible additions (settings screen, calibration wizard, diagnostics, etc.)

Phase 2 — Exhaustive bug & vulnerability hunt (EVERY issue, no matter how small)

For EVERY finding, use this EXACT format: Severity: Critical / High / Medium / Low Folder & Location: web_demo/... or mobile/... (file + function/component) Title: One-line summary Impact: Real-world harm in hostile environment Reproduction / Conditions: Evidence: Recommended Fix: Minimal, auditable patch in ```diff format (6–10 lines context) OR full updated file snippet with security comments Verification: Test steps or test idea

Phase 3 — Mobile-specific hardening review (MUST explicitly check all)

  1. Feature honesty — any stubbed/unimplemented UI?
  2. AndroidManifest.xml correctness (structure, permissions, exported components, cleartext)
  3. iOS Info.plist privacy strings & Face ID description
  4. Versioning consistency across package.json / app config / Android / iOS
  5. Diagnostics export safety (must leak zero payload content)
  6. Capture UX clarity and stall recovery messaging
  7. Documentation alignment (README + ARCHITECTURE.md)

Phase 4 — Cross-cutting & systemic issues

Recurring patterns, architectural risks to “dumb sensor” or “client-only WASM crypto” models, accessibility/security conflicts. Praise exceptionally clean areas explicitly.

Phase 5 — Prioritized remediation roadmap (Top 5–8 only)

Rank Critical → High → Medium. For each:

  • Issue
  • Severity
  • Effort: S / M / L
  • Why fix now (one blunt sentence)

Phase 6 — Verification & Deliverables

After fixes:

  • Simulate type/lint/test checks and report results
  • List exact commands I should run locally
  • Create ONE report file: WEB_MOBILE_10OF10_AUDIT_[VERSION]_[AUDIT_DATE].md Required sections: Executive Summary, web_demo/mobile Summaries, Issues Found, Fixes Applied, Cross-cutting Risks, Verification Results, Local Verification Commands, Manual Test Plan, Release Readiness Score (/10), Remaining Gaps, Prioritized Follow-up (Blockers / High-impact / Nice-to-have / Future)

Rules (strict):

  • Be brutally honest and paranoid.
  • Output only diffs or complete updated files — never assume direct edit access.
  • Never suggest network on mobile, crypto in JS, or relaxing invariants.
  • If an area is perfect, say: "No issues — this area is clean and production-hardened."

Start now with Phase 1 (web_demo summary, then mobile summary).