Patent ID: 11971996
Assignee: AO KASPERSKY LAB
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 16:
17. A non-transitory computer-readable medium, storing instructions thereon for increasing the cybersecurity of a control subject of an industrial technological system, the instructions comprising:
installing a protected Operating System (OS) on a control subject of the industrial technological system, wherein the control subject comprises an upper level control subject including controllers which control computers and human-machine interfaces, the upper level control subject being configured to obtain and compile information about states of elements of the industrial technological system and configure a policy for access to one or more USB ports, wherein the policy is to deny access to the one or more USB ports when the access is requested by a user working in a guest OS;
receiving, by the protected OS, a plurality of log files from the control subject;
analyzing, by the protected OS, the plurality of log files to determine when a suspicious action has been applied to the control subject, wherein the suspicious action comprises a deliberate illegitimate external action on a state of an object of control, and wherein the control subject is configured to apply a controlling action to the object of control;
intercepting, by the protected OS, network packets transmitted by an application launched in the guest OS to the control subject; and
preventing, by the protected OS, an interaction between the application and the control subject, in response to determining that the suspicious action has been applied to the control subject.