Peakhour.IO - Technicalhttps://www.peakhour.io/Wed, 29 Jul 2026 00:00:00 +1000ZDNS - scan the entire internethttps://www.peakhour.io/blog/zdns/<p>Details the use of ZDNS, a high-performance DNS toolkit, to create a comprehensive Reverse DNS (rDNS) lookup database by scanning the entire internet, and how randomizing the IP space overcomes UDP timeout issues.</p>ACTue, 20 Jun 2023 13:00:00 +1000tag:www.peakhour.io,2023-06-20:/blog/zdns/TechnicalDNSCDNRate LimitingResidential ProxiesDDoSDouble MAD?https://www.peakhour.io/blog/double-mad/<p>This article explores the use of Double Median Absolute Deviation (Double MAD) for anomaly detection in time series data, particularly in skewed or non-symmetric distributions.</p>ACMon, 15 May 2023 13:00:00 +1000tag:www.peakhour.io,2023-05-15:/blog/double-mad/TechnicalAnomaly DetectionThreat DetectionBot ManagementResidential ProxiesDDoSDouble MAD vs the Resthttps://www.peakhour.io/blog/double-mad-vs-zscore/<p>A look at the limitations of Double MAD for anomaly detection, and a comparison with the Z-score method, to help you choose the right approach for your data.</p>ACMon, 15 May 2023 13:00:00 +1000tag:www.peakhour.io,2023-05-15:/blog/double-mad-vs-zscore/TechnicalAnomaly DetectionEfficiently Generating and Printing All IPv4 Addresses in a Random Orderhttps://www.peakhour.io/blog/linear-congruential-generator/<p>Explains how to efficiently generate all IPv4 addresses in a random order using a Linear Congruential Generator (LCG), a memory-efficient method for tasks like security testing and network simulation.</p>ACMon, 15 May 2023 13:00:00 +1000tag:www.peakhour.io,2023-05-15:/blog/linear-congruential-generator/TechnicalResidential ProxiesNetworkingDDoSTLS FingerprintingScaling anomaly detection with RRCFhttps://www.peakhour.io/blog/rrcf-scaling/<p>Discusses strategies for scaling the Robust Random Cut Forest (RRCF) algorithm for large-scale anomaly detection, including using summary statistics, buffering input, and parallelisation.</p>ACMon, 15 May 2023 13:00:00 +1000tag:www.peakhour.io,2023-05-15:/blog/rrcf-scaling/TechnicalAnomaly DetectionThreat DetectionApplied RRCF - thresholding techniques.https://www.peakhour.io/blog/rrcf-thresholding/<p>Explores various thresholding techniques like Median Absolute Deviation (MAD), Min/Max, and Z-Score for interpreting Robust Random Cut Forest (RRCF) anomaly scores, crucial for classifying data points as normal or anomalous.</p>ACMon, 15 May 2023 13:00:00 +1000tag:www.peakhour.io,2023-05-15:/blog/rrcf-thresholding/TechnicalAnomaly DetectionThreat Detection