International Business Machines Corporation

Yukihiko Sohda

Masami Tada

Akira Ohkado

Hideaki Komatsu

Tadashi Tsumura

Moriyoshi Ohara

Takao Moriyama

Hiroshi Inoue

Seiji Munetoh

Kazuhito Akiyama

Sanehiro Furuichi

Michiaki Tatsubori

Toshiro Takase

Yuhichi Nakamura

Yuto Fukui

Tomoaki Kohno

A technique to execute a backup process efficiently when an identical file is owned by multiple persons in order to decrease storage capacity and traffic volume requirements. In a backup system including a backup execution terminal, backup destination terminals, and a management server, the backup execution terminal executes a deemed backup process for deeming the file identical to the target file and owned on the backup destination terminals to be a backup duplicate of the target file, or an actual backup process for sending the target file to the management server, each of the backup destination terminals stores the backup execution terminal and the file identical to the target file in association with each other at the time of the deemed backup, and the management server stores the target file sent from the backup execution terminal at the time of the actual backup.

Executing a file backup process

A mechanism is provided for effectively detecting an abnormality occurring in a control system and isolating the control system in which abnormality is acknowledged. The mechanism receives, from one or more control systems in the plurality of control systems, respective abnormality notifications for respective counter control systems to be monitored by the plurality of control systems. The mechanism adds up abnormality notifications transmitted from respective monitoring sections of the plurality of control systems so as to evaluate the reputation of a control system suspected to have an abnormality. The mechanism causes a protected area for operating the control system suspected to have an abnormality to restrict outbound traffic from at least the inside of the protected area, when an indication is identified that the control system is abnormal according to criteria from a result of the evaluation.

Abnormality detection for isolating a control system

An anomaly detection mechanism is provided that detects an anomaly in a control network, and includes an identifying unit to receive event information on an event that occurs, and to identify a group including a resource related to the event information by referring to a configuration management database for retaining dependence relationships between processes and resources including a control system; a policy storing unit to store one or more policies each of which associates one or more actions with a condition defining a situation suspected to have an anomaly; an adding unit to acquire group-related information needed for application to the one or more policies, and to add the acquired information to the event information; and a determining unit to apply the event information to the one or more policies and to determine the one or more actions associated with the matched condition as one or more actions to be taken.

Anomaly detection to implement security protection of a control system

Data transfer during processor context switching is reduced, particularly in relation to a time-sharing microtasking programming model. Prior to switching context of a processor having local memory from a first to a second process, a portion of the local memory that does not require transfer to system memory for proper saving of data associated with the first process is determined. The context of the processor is then switched from the first to the second process, including transferring all of the local memory as the data associated with the first process, to system memory&#x2014;except for the portion of the local memory that has been determined as not requiring saving to the system memory for proper saving of the data associated with the first process. Therefore, switching the context from the first to the second process results in a reduction of data transferred from the local memory to the system memory.

Reduced data transfer during processor context switching

A system includes a detection unit configured to detect unauthorized access to one or more information processing apparatuses that are virtually implemented by virtual machines executed by a computer; an authorized network configured to transfer authorized access to the one or more information processing apparatuses from an external network; a honeypot network configured to transfer unauthorized access to the information processing apparatuses from the external network; and a control unit configured to connect the information processing apparatuses for which no unauthorized access has been detected to the authorized network, and connect the information processing apparatuses for which unauthorized access has been detected to the honeypot network; wherein the control unit shifts, in response to detecting unauthorized access by the detection unit, the corresponding information processing apparatus into a decoy mode in which the detected unauthorized access is disconnected from a normal operation.

Providing protection against unauthorized network access

Provides methods, apparatus and systems for message request response server and processor. A server apparatus including: a request processing unit for performing processing for a first processing request message received, and creating a first processing response message; a cache unit for caching the first processing response message in association with a first key created based on the first processing request message; a message analysis unit for analyzing the second processing request message received; a key creation unit for creating a second key based on the analysis result; and a cache management unit for returning the cached first processing response message when the second key coincides with the first key, and when the second key does not coincide with the first key, notifying the result of the analysis, allowing the request processing unit to perform processing based on the analysis result, and returning the second processing response message created.

Message request response server and processor

Provided is a complier which optimizes parallel processing. The complier records the number of execution cores, which is the number of processor cores that execute a target program. First, the compiler detects a dominant path, which is a candidate of an execution path to be consecutively executed by a single processor core, from a target program. Subsequently, the compiler selects dominant paths with the number not larger than the number of execution cores, and generates clusters of tasks to be executed by a multi-core processor in parallel or consecutively. After that, the compiler computes an execution time for which each of the generated clusters is executed by the processor cores with the number equal to one or each of a plurality natural numbers selected from the natural numbers not larger than the number of execution cores. Then, the compiler selects the number of processor cores to be assigned for execution of each of the clusters based on the computed execution time.

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Yamato, Japan

Yukihiko Sohda