Abstract: Disclosed are system and method for executing calls to a file system of a computer. An exemplary method comprises intercepting, by a software agent, a call to the file system; determining one or more parameters of the call that identify its functionality; determining a priority of executing the call based on the one or more parameters; storing information about the call, the parameters and the priority into a database; selecting from the database, one or more calls for execution based at least in part on relative priorities of execution of the plurality of calls stored in the database; determining whether to execute or not to execute a selected call based on whether the selected call interferes with execution of an earlier selected call; and when the selected call does not interfere with execution of an earlier selected call, passing the selected call to the file system for execution.

Abstract: Disclosed are systems and methods for blocking access to protected applications. An exemplary method includes: intercepting access by a process of first information to be displayed on the user's device; determining second information based on the interception of the access by the process, the second information associated with the process; determining a region on a display of the user's device associated with the first information; analyzing one or more intersections between the region and at least one graphic interface associated with the process; and blocking the access by the process to the first information based on the analysis of the one or more intersections between the region and the at least one graphic interface associated with the process.

Abstract: Disclosed are systems and methods for blocking access to protected applications. An exemplary method includes: intercepting access by a process of first information to be displayed on the user's device; determining second information based on the interception of the access by the process, the second information associated with the process; determining a region on a display of the user's device associated with the first information; analyzing one or more intersections between the region and at least one graphic interface associated with the process; and blocking the access by the process to the first information based on the analysis of the one or more intersections between the region and the at least one graphic interface associated with the process.

Abstract: Disclosed is a system and method for identifying a path in a tree data structure having a plurality of levels. An example method includes receiving a request from a software application to access a resource in a computer file system using a requested path; identifying a first element in the requested path; comparing the first element with nodes in a first level of the tree data structure to identify an exact match; if the first element does not have an exact match, comparing the first element with at least one mask node in the first level of the tree data structure to identify a match by mask; and if the first element does not match one of mask nodes in the first level of the tree data structure, determining that the requested path is not in the tree data structure.

Abstract: In a computer system, joint operation of multiple hypervisors is coordinated. A persistent hypervisor and a non-persistent hypervisor are executed. The non-persistent hypervisor is executed in the supervisor mode according to an operating regime controlled by a scheduler engine, and the persistent hypervisor is executed in the hypervisor mode under the control of a handler engine. The handler engine monitors, and responds, to an attempted mode transition of the processor between the hypervisor and supervisor modes, and coordinates the suspension and resumption, as appropriate, of the persistent hypervisor.

Abstract: Disclosed are systems and methods for protecting transmission of audio data from microphone to application process. An exemplary method includes receiving a request from a software process to obtain an audio stream from an audio endpoint device; allocating a data buffer for the software process; processing and encrypting audio data received from the audio endpoint device by audio processing objects; storing the encrypted audio data in the allocated data buffer; installing an interceptor of a API function call for the software process; and decrypting the encrypted audio data from the allocated data buffer by the software process using the interceptor of the API function call.

Abstract: Disclosed are systems and methods for protecting transmission of audio data from microphone to application process. An exemplary method includes receiving a request from a software process to obtain an audio stream from an audio endpoint device; allocating a data buffer for the software process; processing and encrypting audio data received from the audio endpoint device by audio processing objects; storing the encrypted audio data in the allocated data buffer; installing an interceptor of a API function call for the software process; and decrypting the encrypted audio data from the allocated data buffer by the software process using the interceptor of the API function call.

Abstract: Disclosed are systems and method for configuring antivirus scans on a computer. An example method comprising: identifying, by a hardware processor, a software object that requires an antivirus scan; collecting, by the hardware processor, information for setting antivirus scan of the object; accessing, by the hardware processor, a data store of antivirus setting rules; selecting, by the hardware processor, a date and time for the start of the antivirus scan of the object based on the collected information and one or more antivirus setting rules; selecting, by the hardware processor, an antivirus scan method based on the collected information, the selected date and time, and one or more antivirus setting rules; and performing, by the hardware processor, an antivirus scan of the object using the selected antivirus scan method and at the selected date and time.

Abstract: Disclosed are system and method for executing calls to a file system of a computer. An exemplary method comprises intercepting, by a software agent, a call to the file system; determining one or more parameters of the call that identify its functionality; determining a priority of executing the call based on the one or more parameters; storing information about the call, the parameters and the priority into a database; selecting from the database, one or more calls for execution based at least in part on relative priorities of execution of the plurality of calls stored in the database; determining whether to execute or not to execute a selected call based on whether the selected call interferes with execution of an earlier selected call; and when the selected call does not interfere with execution of an earlier selected call, passing the selected call to the file system for execution.

Abstract: Disclosed are systems and methods for counteracting unauthorized access to microphone data. An example method include storing, in a data buffer, audio data received from an audio endpoint device, installing, a software driver associated with the audio session, where the software driver prevents access to the audio data by unauthorized software applications, and receiving process identifier data from a software application requesting to access the audio data stored in the data buffer. Furthermore, the method includes determining whether the application requesting access to the audio data is an unauthorized software application and controlling the software driver to prevent access to the audio data by the determined unauthorized software application.

Abstract: Systems and methods for intercepting computing device system calls for a computing device including a kernel having a system call table. A hypervisor is executed on the computing device, the hypervisor configured to control at least one of the computing device processor registers. At least one modified kernel structure is created, the modified kernel structure including a modified system call table. A memory address of an original system call handler is determined, the original system call handler configured to receive kernel operation commands. A size of a loaded image of the original system call handler is determined. A copy of the original system call handler as a second system call handler is created, and the second system call handler intercepts a computing device system call.

Abstract: Disclosed are systems and method for configuring antivirus scans on a computer. An example method comprising: identifying, by a hardware processor, a software object that requires an antivirus scan; collecting, by the hardware processor, information for setting antivirus scan of the object; accessing, by the hardware processor, a data store of antivirus setting rules; selecting, by the hardware processor, a date and time for the start of the antivirus scan of the object based on the collected information and one or more antivirus setting rules; selecting, by the hardware processor, an antivirus scan method based on the collected information, the selected date and time, and one or more antivirus setting rules; and performing, by the hardware processor, an antivirus scan of the object using the selected antivirus scan method and at the selected date and time.

Abstract: Disclosed is a system and method for identifying a path in a tree data structure having a plurality of levels. An example method includes receiving a request from a software application to access a resource in a computer file system using a requested path; identifying a first element in the requested path; comparing the first element with nodes in a first level of the tree data structure to identify an exact match; if the first element does not have an exact match, comparing the first element with at least one mask node in the first level of the tree data structure to identify a match by mask; and if the first element does not match one of mask nodes in the first level of the tree data structure, determining that the requested path is not in the tree data structure.

Abstract: In a computer system, joint operation of multiple hypervisors is coordinated. A persistent hypervisor and a non-persistent hypervisor are executed. The non-persistent hypervisor is executed in the supervisor mode according to an operating regime controlled by a scheduler engine, and the persistent hypervisor is executed in the hypervisor mode under the control of a handler engine. The handler engine monitors, and responds, to an attempted mode transition of the processor between the hypervisor and supervisor modes, and coordinates the suspension and resumption, as appropriate, of the persistent hypervisor.

Abstract: Disclosed are system and method for performing antivirus scans of files. An exemplary method includes detecting, by an antivirus application executed by a hardware processor, opening of a file for writing of data to the file; performing, by the antivirus application, antivirus scan of at least a portion of the file; when the file is determined to be clean, obtaining a record of antivirus scans of the file; determining from the record a number of performed antivirus scans on the file by the antivirus application and a maximum number of required antivirus scans; when the number of performed antivirus scans is below the maximum number of required antivirus scans, continue antivirus scans of the file by the antivirus application; and when the number of performed antivirus scan is equal to the maximum number of required antivirus scans, discontinue antivirus scans of the file by the antivirus application.

Abstract: Systems and methods for intercepting computing device system calls for a computing device including a kernel having a system call table. A hypervisor is executed on the computing device, the hypervisor configured to control at least one of the computing device processor registers. At least one modified kernel structure is created, the modified kernel structure including a modified system call table. A memory address of an original system call handler is determined, the original system call handler configured to receive kernel operation commands. A size of a loaded image of the original system call handler is determined. A copy of the original system call handler as a second system call handler is created, and the second system call handler intercepts a computing device system call.

Abstract: In a computer system, joint operation of multiple hypervisors is coordinated. A persistent hypervisor and a non-persistent hypervisor are executed. The non-persistent hypervisor is executed in the supervisor mode according to an operating regime controlled by a scheduler engine, and the persistent hypervisor is executed in the hypervisor mode under the control of a handler engine. The handler engine monitors, and responds, to an attempted mode transition of the processor between the hypervisor and supervisor modes, and coordinates the suspension and resumption, as appropriate, of the persistent hypervisor.

Abstract: Systems and methods for intercepting computing device system calls for a computing device including a kernel having a system call table. A hypervisor is executed on the computing device, the hypervisor configured to control at least one of the computing device processor registers. At least one modified kernel structure is created, the modified kernel structure including a modified system call table. A memory address of an original system call handler is determined, the original system call handler configured to receive kernel operation commands. A size of a loaded image of the original system call handler is determined. A copy of the original system call handler as a second system call handler is created, and the second system call handler intercepts a computing device system call.

Abstract: Disclosed are systems, methods and computer program products for control of applications using preliminary file filtering. An example method includes intercepting, by a processor, an operation on a file performed by an application; selecting at least a part of the file; applying one or more file filters to the selected part of the file; determining a set of file characteristics based on outcomes of the file filters; determining a decision, based on the set of file characteristics, whether to exclude the file from further analysis by a client of an application control system; and based on the decision, excluding the file from the further analysis by the client of the application control system or providing the file to the client of the application control system for further analysis whether to allow or prohibit the operation on the file.