Abstract: The present disclosure relates to systems, methods, and storage media for controlling and simulating spacecraft maneuvers, where the method comprises requesting, using a pilot vehicle interface, a view of the on-orbit operations, wherein the view comprises at least one object; receiving, from a simulation engine executing on a virtual machine, scenario data describing a status of the on-orbit operations; receiving object information about how the at least one object interacts with the on-orbit operations; integrating the scenario data with the object information to obtain the on-orbit operations; and providing, via the pilot vehicle interface, the view of the on-orbit operations.

Abstract: A spacecraft bus system described herein includes a propulsion assembly, a top plate assembly, and a bottom plate assembly. Each one of the propulsion assembly, the top plate assembly, and the bottom plate assembly is configured to be separately assembled and tested for spaceworthiness. Also described herein is a propulsion assembly for use with a spacecraft. The propulsion assembly includes a propellant tank containing propellant therein, at least one thruster, and a frame configured for supporting the propellant tank and the at least one thruster thereon. The propulsion assembly, as an individual module, is configured to be assembled and subjected to testing related to spaceworthiness. Additionally, the frame may be further configured for attachment to other components of the spacecraft, after being assembled and subjected to testing, without modification to the propulsion assembly or the other components of the spacecraft.

Abstract: A system and a method are disclosed for describing a mechanism for tracking malicious activity detected on a network. For example, based on network data collected from a server, the disclosed system may detect malicious activity originating from a client device directed to the server. To detect the malicious activity, network data may be captured by the server and analyzed. When malicious activity is detected, the system may track the malicious activity, using the network data, to an earliest connection date of a client device from where the malicious activity potentially originated. The earliest connection date may indicate a potential start date of the malicious activity.

Abstract: A system and a method are disclosed for describing a mechanism for tracking malicious activity detected on a network. For example, based on network data collected from a server, the disclosed system may detect malicious activity originating from a client device directed to the server. To detect the malicious activity, network data may be captured by the server and analyzed. When malicious activity is detected, the system may track the malicious activity, using the network data, to an earliest connection date of a client device from where the malicious activity potentially originated. The earliest connection date may indicate a potential start date of the malicious activity.

Abstract: A method evaluates whether a web domain is malicious. The method forms a feature vector, including data from web crawling. The features may include: whether the domain is cached from web crawling; the number of unique publicly accessible URIs hosted on the domain; the number of backlinks referencing the domain; the number of unique domain names in referring backlinks; the number of unique IP addresses in the referring backlinks; the number of unique IP address groups in the referring backlinks; and the proportion of hyperlinks to the domain from popular websites. For multiple classifiers, the method computes a probability that the domain is malicious. Each classifier is a decision tree constructed according to a subset of features and a subset of sample feature vectors. The method combines the individual probabilities to form an overall probability and returns the computed overall probability to the client.

Abstract: A system and method for managing virtual property is disclosed. In the system, virtual items are each represented by one or more digital objects and are managed by one or more computer systems functioning as an owner, broker, authenticator and provider.