Patents by Inventor Georgios Papaloukopoulos
Georgios Papaloukopoulos has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240005001Abstract: A computer system is provided. The computer system includes a memory and at least one processor coupled to the memory and configured to detect triggering of one or more threat detectors. The at least one processor is further configured to activate a subset of nodes from a plurality of nodes in a Bayesian network in response to the detection, the activated subset of nodes associated with the triggered threat detectors. The at least one processor is further configured to calculate a probability of malicious action using the Bayesian network to combine probabilities associated with the activated subset of nodes. The at least one processor is further configured to determine that the probability exceeds a threshold value. The at least one processor is further configured to perform a security action in response to the determination.Type: ApplicationFiled: July 19, 2022Publication date: January 4, 2024Applicant: Citrix Systems, Inc.Inventors: Andreas Varnavas, Georgios Papaloukopoulos, Asterios Stergioudis, Dimitrios Markonis, Nikolaos Tsapakis, Georgios Tsolis
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Patent number: 11792082Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: GrantFiled: October 27, 2021Date of Patent: October 17, 2023Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos
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Patent number: 11595415Abstract: Described embodiments provide systems and methods for anomaly detection and root cause analysis. A root cause analyzer receives a plurality of data samples input to an anomaly detection engine, and a corresponding plurality of anomaly labels output from the anomaly detection engine. The root cause analyzer trains a classification model using the plurality of data samples and the corresponding plurality of anomaly labels. The root cause analyzer determines, using the trained classification model and the plurality of data samples, relative contributions of anomalous features in a data sample of the plurality of data samples, to a prediction that the data sample is anomalous. The root cause analyzer provides the relative contributions of anomalous features to a device, to determine an action in response to the prediction that the data sample is anomalous.Type: GrantFiled: January 3, 2020Date of Patent: February 28, 2023Inventors: Asterios Stergioudis, Aikaterini Kalou, Georgios Papaloukopoulos
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Publication number: 20220116279Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: ApplicationFiled: October 27, 2021Publication date: April 14, 2022Applicant: Citrix Systems, Inc.Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos
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Patent number: 11171838Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: GrantFiled: July 20, 2020Date of Patent: November 9, 2021Assignee: CITRIX SYSTEMS, INC.Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos
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Publication number: 20210306223Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: ApplicationFiled: March 23, 2021Publication date: September 30, 2021Applicant: Citrix Systems, Inc.Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos
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Publication number: 20210136098Abstract: Described embodiments provide systems and methods for anomaly detection and root cause analysis. A root cause analyzer receives a plurality of data samples input to an anomaly detection engine, and a corresponding plurality of anomaly labels output from the anomaly detection engine. The root cause analyzer trains a classification model using the plurality of data samples and the corresponding plurality of anomaly labels. The root cause analyzer determines, using the trained classification model and the plurality of data samples, relative contributions of anomalous features in a data sample of the plurality of data samples, to a prediction that the data sample is anomalous. The root cause analyzer provides the relative contributions of anomalous features to a device, to determine an action in response to the prediction that the data sample is anomalous.Type: ApplicationFiled: January 3, 2020Publication date: May 6, 2021Inventors: Asterios Stergioudis, Aikaterini Kalou, Georgios Papaloukopoulos
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Patent number: 10972358Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: GrantFiled: March 28, 2018Date of Patent: April 6, 2021Assignee: Citrix Systems, Inc.Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos
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Publication number: 20200351169Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: ApplicationFiled: July 20, 2020Publication date: November 5, 2020Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos
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Patent number: 10721134Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: GrantFiled: March 28, 2018Date of Patent: July 21, 2020Assignee: Citrix Systems, Inc.Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos
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Publication number: 20190068512Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: ApplicationFiled: March 28, 2018Publication date: February 28, 2019Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos
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Publication number: 20190068453Abstract: Described embodiments provide systems and methods for inferring a network type and network conditions. The system includes a packet capturing engine configured to capture a plurality of network packets from a plurality of TCP network connections. The system includes a packet analyzer configured to analyze the plurality of network packets to generate a plurality of metrics. The system includes a network classifier configured to infer network types of the plurality of TCP connections based on the plurality of metrics and at least one classification model. The system also includes a conditions ranking engine configured to estimate a level of network congestion for each TCP connection based on the plurality of metrics and the network types.Type: ApplicationFiled: March 28, 2018Publication date: February 28, 2019Inventors: Georgios Papaloukopoulos, Georgios Tsolis, Athanasios Kordelas, Aikaterini Kalou, Nicholas Stavrakos