HAWK: A Machine Learning-Based IoT Network Intrusion Detection System with Multi-Model Fusion Security Protection Scheme

HAWK is an IoT-focused network intrusion detection system (IDS) that combines deep learning, instance learning, and probability models. It detects DoS attacks, backdoor intrusions, and reconnaissance behaviors in real time based on the UNSW-NB15 dataset. Designed for ease of use, it lowers security barriers for non-technical users (e.g., SMEs and individuals) to access enterprise-level protection.

With the explosive growth of IoT devices, attack surfaces expand rapidly. Traditional rule-based IDS fail at new attacks, while manual analysis can't handle massive traffic. HAWK aims to auto-identify threats (DoS, backdoor, recon) via ML, and its core positioning is to reduce security thresholds—users need no programming background to deploy, providing enterprise-level protection for SMEs and individuals. It uses the UNSW-NB15 dataset (real modern traffic features, various attacks and normal patterns).

HAWK uses a multi-layer ML stack:

1. Feature Engineering: One-Hot encoding for categorical features, Pearson correlation analysis to reduce dimensions while retaining discriminative features.
2. Deep Learning Engine: Trained deep neural networks extract high-level abstract features, capturing complex attack patterns hard to detect by humans.
3. Instance Learning & Probability Reasoning: Compares new behaviors with known cases (similarity calculation) and uses prob models to assess attack likelihood, balancing detection rate and false positives. This multi-model fusion boosts robustness.

Key features:

• Real-time Monitoring: Analyzes traffic instantly, triggers alerts on attack detection to curb spread and reduce losses.
• Attack Classification: Identifies DoS (resource exhaustion), backdoor (hidden control channels), recon (pre-attack info gathering), exploit (known vulnerability attacks), and fuzzers (abnormal input testing).
• IoT Optimization: Adjusts detection strategies for IoT devices (cameras, sensors, smart home) to counter botnet attacks on IoT.

System Requirements: Windows 10+ (64-bit recommended), ≥4GB RAM, 500MB disk space, Intel Core i3+, stable network. Installation: Download from GitHub Releases, follow wizard (select path, agree terms) → auto desktop shortcut. Configuration: Adjust via GUI:

• Alert threshold (sensitivity vs false positives).
• Notification methods (popup, email).
• Monitoring scope (specific devices/segments).
• Update strategy (auto/manual model updates).

Core Advantages:

1. Zero-code experience (graphical interface for non-technical users).
2. Multi-model fusion (deep learning + instance + prob models → higher accuracy).
3. IoT-specific optimization.
4. Real-time response (millisecond-level detection/alerts).
5. Continuous learning (model updates for new attacks).

Potential Limitations:

1. Platform restriction (only Windows; no Linux/macOS support).
2. Resource consumption (may affect old devices).
3. Dependence on training data quality/coverage.
4. Possible false positives in complex networks.

Value: Lowers AI security tool barriers for SMEs (no professional team/expensive tools needed). Translates academic ML research to practical products (UNSW-NB15 use, multi-model fusion, IoT optimization). Future Plans:

1. Cross-platform support (Linux/macOS).
2. Edge computing deployment (lightweight models for edge devices).
3. Federated learning integration (privacy-preserving collaborative training).
4. Threat intelligence linkage (update attack features).
5. Enhanced visualization (threat posture understanding).

HAWK is an important attempt to make AI-driven security tools accessible. Integrating deep learning, instance learning, and probability reasoning, it provides comprehensive IoT intrusion detection. Its zero-code design lets more organizations deploy professional protection. As IoT grows and attacks evolve, tools like HAWK will play a key role in digital security.