Abstract: Systems and methods of assigning community promoting roles in a virtual computer network of users, including: determining usage of shared information among at least two users sharing information via computers connected by a virtual computer network, assigning at least one community promoting role to at least one user within the virtual computer network of users, wherein the at least one community promoting role is determined based on the determined usage of the shared information, calculating a community contribution score of the at least one user, to the virtual computer network of users, and managing communication traffic in the virtual computer network based on the determined roles.

Abstract: A method for evaluating a scope of cyber-attack incidents, the method may include detecting original compromised assets and malicious external machines that are related to each of the cyber-attack incidents; classifying potentially compromised assets to different classes based on (a) similarities between the potentially compromised assets and the original compromised assets, (b) a level of accessibility from the original compromised assets and malicious external machines to the potentially compromised assets, and (c) volumes of traffic between the potentially compromised assets and each one of the malicious external machines and the original compromised assets; wherein the different classes comprise compromised and non-compromised; and generating an alert that is indicative of the compromised assets and of potentially compromised assets that were classified as compromised.

Abstract: A method for evaluating a deployment of a network access change request, the method includes: (a) formatting a network access change request to provide a formatted network access change request; wherein the formatted network access change request includes multiple formatted request items; wherein the multiple formatted request items includes a requested access type, an address of an access source, an address of an access destination; (b) determining multiple relationships between the multiple formatted request items and corresponding items of at least one entity out of a network model and a current network policy; and (c) responding to the network access change request in response to the multiple determined relationships.