Delta-IPInsight: Temporal Embedding Shifts for Real-Time Anomaly Detection in High-Velocity Log Streams
Aravind Satyanarayanan · International Journal of Emerging Research in Engineering and Technology · 2022
Real-time anomaly detection in high-velocity machine-generated log streams is critical for safeguarding regulated environments such as government networks, critical infrastructure, and large-scale enterprise systems. In such domains, security breaches often evolve over time through subtle behavioral shifts, such as lateral movement, credential misuse, or system misuse. Traditional approaches to anomaly detection including static rule-based systems, log parsers, and batch-trained machine learning models struggle to capture these gradual deviations, especially in streaming scenarios where context and temporal evolution are essential. Furthermore, many existing systems lack explainability and do not comply with privacy and regulatory requirements, limiting their adoption in sensitive environments. To address these challenges, we propose Delta-IP Insight, a real-time, policy-aware anomaly detection framework designed to operate at scale in streaming log environments. The core innovation of Delta-IP Insight is its use of delta-based temporal embedding shifts () to model how entity behavior evolves over time. Each log line is embedded using a Transformer-based encoder, and embeddings are tracked in per-entity memory tables stored in a Redis-backed store. Changes between successive embeddings are used to compute drift indices (DI), which are combined with entropy metrics and peer deviation scores to produce interpretable anomaly scores. These scores are visualized using UMAP and fed into a policy-driven alerting engine. Delta-IP Insight is designed for high-throughput environments using a modular architecture with Apache Kafka, Spark Streaming, Torch Serve, Faiss, and Kubernetes. It achieves low-latency inference while maintaining explainability and compliance. We evaluate our framework on public (LANL, CERT) and synthetic datasets and show significant improvements in detection latency (23%), F1-score (15%), and interpretability (19%) compared to state-of-the-art baselines such as DeepLog, MIDAS, and LogELECTRA. Our results demonstrate that Delta-IP Insight provides a practical and extensible solution for real-time behavioral monitoring in complex, regulated domains. Anomaly detection, embedding drift, log analysis, cybersecurity, streaming data, delta embedding, peer deviation, memory drift index, NIST compliance, explainable AI