GridShield is currently in active development. We release security updates for the following versions:

GridShield is designed for Advanced Metering Infrastructure (AMI) security, a critical infrastructure component. Please be aware:

⚠️ WARNING: The current implementation uses placeholder cryptography for development purposes only.

Before production deployment, you MUST:

• Replace mock ECC implementation with production library (uECC, mbedTLS)
• Integrate hardware security modules (HSMs) or secure elements (e.g., ATECC608)
• Enable secure boot and firmware signing
• Implement proper key management and storage (EEPROM/Flash encryption)
• Conduct security audits and penetration testing
• Enable watchdog timers and anti-debugging protections

Current prototype limitations that affect security:

1. Cryptography: Production micro-ecc integrated (ECDSA secp256r1), but:

   • AES-GCM relies on mbedTLS software implementation
   • No post-quantum cryptography support yet
   • Key derivation uses HKDF (software-only)

2. Key Storage: NVS-based encrypted key store implemented

   • No hardware-backed secure element (ATECC608) integration yet
   • Key rotation mechanism available but manual

3. Physical Security: Multi-sensor tamper detection available

   • MPU6050 accelerometer, limit switches, temperature sensors
   • Not yet tested with full production enclosure

4. Network Security: Packet authentication with ECDSA signatures

   • Replay protection via sequence numbers
   • No perfect forward secrecy (PFS) yet
   • No mutual TLS (mTLS) yet

DO NOT open public GitHub issues for security vulnerabilities.

Instead, please report security issues via:

📧 Email: zuudevs@gmail.com
Subject: [SECURITY] GridShield Vulnerability Report

1. Description: Detailed vulnerability description
2. Impact: Potential security impact (confidentiality, integrity, availability)
3. Proof of Concept: Steps to reproduce (if applicable)
4. Affected Versions: Which versions are vulnerable
5. Suggested Fix: Any recommendations (optional)

• Acknowledgment: Within 48 hours
• Initial Assessment: Within 7 days
• Fix Development: Depends on severity
  • Critical: 14 days
  • High: 30 days
  • Medium: 60 days
  • Low: Next release cycle

We follow Coordinated Disclosure:

1. You report the vulnerability privately
2. We confirm and develop a fix
3. We release a security patch
4. After patch release, we publicly acknowledge the reporter (if desired)
5. Full disclosure 30 days after patch availability

We maintain a list of security researchers who have responsibly disclosed vulnerabilities:

(No reports yet - you could be the first!)

If you're contributing to GridShield:

• Never commit credentials, API keys, or private keys
• Run static analysis tools (clang-tidy, cppcheck)
• Enable all compiler warnings (-Wall -Wextra -Wpedantic)
• Use sanitizers during testing (AddressSanitizer, UndefinedBehaviorSanitizer)
• Follow secure coding standards (CERT C++, MISRA C++)
• Review cryptographic code carefully - never roll your own crypto

If you're deploying GridShield in production:

• Always use production-grade cryptographic libraries
• Implement secure boot chain verification
• Use hardware random number generators (HWRNG)
• Enable stack canaries and ASLR
• Implement rate limiting and DoS protection
• Monitor for anomalous behavior
• Keep firmware updated
• Conduct regular security assessments

Before production deployment:

• Replace all placeholder crypto with production libraries
• Integrate hardware security module (HSM) or secure element
• Implement secure key storage (encrypted EEPROM/Flash)
• Enable secure boot with signature verification
• Add OTA update mechanism with cryptographic signing
• Implement watchdog timer and anti-debugging
• Enable stack canaries (-fstack-protector-strong)
• Use position-independent code (PIE)
• Implement secure erase for sensitive data
• Add encrypted logging
• Conduct penetration testing
• Perform code audit by security experts
• Document threat model and attack surface

Completed security enhancements:

• v1.1: ✅ Production crypto (micro-ecc ECDSA secp256r1)
• v2.0: ✅ ESP-IDF migration, platform abstraction
• v2.1: ✅ NVS key storage, HKDF, AES-256-GCM, Secure Boot v2 docs
• v2.2: ✅ Sensor drivers, OTA with signed firmware, watchdog
• v3.0: ✅ MQTT-TLS, X.509 certificates, ML anomaly detection

Planned:

• v3.1: Hardware Security Module (HSM/ATECC608) integration
• v3.2: Mutual TLS (mTLS) and Perfect Forward Secrecy
• v4.0: Post-quantum cryptography (Kyber, Dilithium)

• OWASP IoT Security Project
• NIST Cybersecurity Framework
• IEC 62443 (Industrial Security)
• CERT C++ Coding Standard

For general security questions (non-vulnerabilities):

• GitHub Discussions: github.com/gridshield/discussions
• Email: zuudevs@gmail.com

Note: This is a research/educational project. For critical infrastructure deployment, consult with certified security professionals.