Fake View Analytics in Online Video Services

Online video-on-demand(VoD) services invariably maintain a view count for each video they serve, and it has become an important currency for various stakeholders, from viewers, to content owners, advertizers, and the online service providers themselves. There is often significant financial incentive to use a robot (or a botnet) to artificially create fake views. How can we detect the fake views? Can we detect them (and stop them) using online algorithms as they occur? What is the extent of fake views with current VoD service providers? These are the questions we study in the paper. We develop some algorithms and show that they are quite effective for this problem.Comment: 25 pages, 15 figure

Spectrum-based deep neural networks for fraud detection

In this paper, we focus on fraud detection on a signed graph with only a small set of labeled training data. We propose a novel framework that combines deep neural networks and spectral graph analysis. In particular, we use the node projection (called as spectral coordinate) in the low dimensional spectral space of the graph's adjacency matrix as input of deep neural networks. Spectral coordinates in the spectral space capture the most useful topology information of the network. Due to the small dimension of spectral coordinates (compared with the dimension of the adjacency matrix derived from a graph), training deep neural networks becomes feasible. We develop and evaluate two neural networks, deep autoencoder and convolutional neural network, in our fraud detection framework. Experimental results on a real signed graph show that our spectrum based deep neural networks are effective in fraud detection

Anomaly Detection in Network Streams Through a Distributional Lens

Anomaly detection in computer networks yields valuable information on events relating to the components of a network, their states, the users in a network and their activities. This thesis provides a unified distribution-based methodology for online detection of anomalies in network traffic streams. The methodology is distribution-based in that it regards the traffic stream as a time series of distributions (histograms), and monitors metrics of distributions in the time series. The effectiveness of the methodology is demonstrated in three application scenarios. First, in 802.11 wireless traffic, we show the ability to detect certain classes of attacks using the methodology. Second, in information network update streams (specifically in Wikipedia) we show the ability to detect the activity of bots, flash events, and outages, as they occur. Third, in Voice over IP traffic streams, we show the ability to detect covert channels that exfiltrate confidential information out of the network. Our experiments show the high detection rate of the methodology when compared to other existing methods, while maintaining a low rate of false positives. Furthermore, we provide algorithmic results that enable efficient and scalable implementation of the above methodology, to accomodate the massive data rates observed in modern infomation streams on the Internet. Through these applications, we present an extensive study of several aspects of the methodology. We analyze the behavior of metrics we consider, providing justification of our choice of those metrics, and how they can be used to diagnose anomalies. We provide insight into the choice of parameters, like window length and threshold, used in anomaly detection

DETECTING APPLICATION ANOMALIES: MACHINE LEARNING APPROACH

In the modern era, world has completely relied on software technology. As software applications became highly demanded, security concerns have arrived. Application security has become one of the chief concerns where companies have to protect their systems from vulnerabilities. Various other securities include mobile or end-point security, operation system security and network security. All these security categories are intended to protect their users and clients from the malicious intents and hackers. Application security became a prime requirement. Security risks of the applications are enveloped and lead to direct threat to the available business. All the application vulnerabilities take the advantage to compromise the software application security. Once a flaw is been found and private data access is determined, attacker will have capability to exploit the software application vulnerability to facilitate cyber crimes. The confidentiality of the data, availability and integrity of resources are targeted by the cyber crimes (“What is Application Security?” 2019). Overall, more than 13% of the reviewed sites were compromised with the web application security vulnerabilities and they are not completely extinct even with the traditional security methodologies (Application Security Vulnerability, 2014). In order to resolve these numerous common security issues, few of the detection, remediation and prevention techniques are to be used which includes defensive programming, sophisticated input validation, dynamic checks, and static source code analysis. In this paper, runtime environment framework is been introduced. This research study extracted few publications. All the publications considered various approaches to resolve the issue. In this research paper framework, machine learning is utilized to train and predict the output. Firstly, a sample java code is executed in various CPU cores and the generated output files are collected. These output files are then used to train machine learning. Machine learning results are then compared with actual output for decision statement