Systems and methods for detecting and interfering with compromised devices and unauthorized device relocation in a communication network are disclosed. The described embodiments may be deployed in a content delivery network where receivers have been compromised in a manner that renders the conditional access system (CAS) inoperative at controlling the receivers' ability to receive content. In some embodiments, alternate commands not protected by the CAS system may be used to detect hacked devices and interdict same. In some embodiments, service devices in the content delivery network may allow for detection of unauthorized device relocation.

Security system for protecting a vehicle electronic system by selectively intervening in the communications path in order to prevent the arrival of malicious messages at ECUs, in particular at the safety critical ECUs. The security system includes a filter which prevents illegal messages sent by any system or device communicating over a vehicle communications bus from reaching their destination. The filter may, at its discretion according to preconfigured rules, send messages as is, block messages, change the content of the messages, request authentication or limit the rate such messages can be delivered, by buffering the messages and sending them only in preconfigured intervals.

The present disclosure provides a method for communication between a network device and a terminal device, where the network device stores a correspondence between a link-layer address and an IP address that are of the terminal device, and the method includes: obtaining, by the network device, a first link-layer address; determining whether a quantity of IP addresses corresponding to the first link-layer address reaches a threshold; if the quantity reaches the threshold, selecting an IP address from the IP addresses, where a quantity of selected IP addresses is not greater than the maximum quantity; saving a correspondence between the first link-layer address and the selected IP address; and sending, according to the selected IP address, a message to a terminal device having the first link-layer address, where the message is used to notify the terminal device whether an IP address is selected by the network device.

Security system for protecting a vehicle electronic system by selectively intervening in the communications path in order to prevent the arrival of malicious messages at ECUs, in particular at the safety critical ECUs. The security system includes a filter which prevents illegal messages sent by any system or device communicating over a vehicle communications bus from reaching their destination. The filter may, at its discretion according to preconfigured rules, send messages as is, block messages, change the content of the messages, request authentication or limit the rate such messages can be delivered, by buffering the messages and sending them only in preconfigured intervals.

This technical solution relates to systems and methods of cyber attack detection, and more specifically it relates to analysis methods and systems for protocols of interaction of malware and cyber attack detection and control centres (servers). The method comprises: uploading the malware application into at least one virtual environment; collecting, by the server, a plurality of malware requests transmitted by the malware application to the malware control center; analyzing the plurality of malware requests to determine, for each given malware request: at least one malware request parameter contained therein; and an order thereof of the at least one malware request parameter. The method then groups the plurality of malware requests based on shared similar malware request parameters contained therein and order thereof and for each group of the at least one group containing at least two malware requests, generates a regular expression describing malware request parameters and order thereof of the group, which regular expression can be used as an emulator of the malware application.

The invention relates to an industrial system comprising machines, systems for controlling machines connected by a first communication network, and a gateway intended to connect the first communication network to a second communication network. The gateway comprises a memory and comprises a processor configured to copy to the memory first data transmitted over the second communication network and relating to the operation of the machines.

Measurements of a device's firmware are made regularly and compared with prior, derived measurements. Prior measurements are derived from a set of identical firmware measurements obtained from multiple devices having the same make, model and firmware version number. The firmware integrity status is reported on a data and device security console for a group of managed endpoints. Alerts about firmware changes, which may be potential attacks on the firmware, are given automatically.

A method and apparatus for preventing access to an IoT device is provided herein. During operation an apparatus will inquire about current and/or past connections to an IoT device. A list of identities of current and/or past apparatuses that were connected to the IoT device will be provided, and a determination on whether or not to allow access to the IoT device will be based on the identities of current and/or past apparatuses that are accessing, or have accessed the IoT device.

In a fraud-detection method for use in an in-vehicle network system including a plurality of electronic control units (ECUs) that exchange messages on a plurality of networks, a plurality of fraud-detection ECUs each connected to a different one of the networks, and a gateway device, a fraud-detection ECU determines whether a message transmitted on a network connected to the fraud-detection ECU is malicious by using rule information stored in a memory. The gateway device receives updated rule information transmitted to a first network among the networks, selects a second network different from the first network, and transfers the updated rule information only to the second network. A fraud-detection ECU connected to the second network acquires the updated rule information and updates the rule information stored therein by using the updated rule information.

Various examples are provided related to identification of protected information elements associated with unique entities in data files present in data file collections associated with enterprise IT networks. The unique entities can be associated with one or more entity identifications in one or more data files. Computer-generated identification of entity identifications and protected information elements can be conducted, in part, by at least some human review. Information generated accordingly to the disclosed methodology can be used to generate plans for a time and number of human reviewers needed to review data files. Information generated from the processes herein can be configured as user notifications, reports, dashboards, machine learning for subsequent data file analyses, and notifications of unique entities having protected information elements present in one or more data files.