Nippon Telegraph and Telephone Corporation

Stanley Electric Co., Ltd

Mitsubishi Heavy Industries Limited

Ntt Corporation

Takaaki Koyama

Yukio Nagafuchi

Toshiharu Kishi

Hideo Kitazume

Yasuhiro Teramoto

Bo Hu

Tetsuo Takahashi

Yuki Mori

Toshiyuki Yamada

Iifan Tyou

Jun Miyoshi

Yoshihiro Itoh

Takahiro Nukushina

Naoki Yamasaki

Tomotaka Asari

Keiichi Okabe

Naohiko Yoshizumi

An analysis device includes processing circuitry configured to acquire, from each network traffic sensor that monitors communication of an Internet of Things (IoT) device, a normal communication model that is used for monitoring the communication and indicates a characteristic of normal communication of the IoT device, cluster a normal communication model group of a same feature among acquired normal communication model groups, calculate a majority cluster that is a cluster having a largest number of normal communication models by using a result of the clustering, and calculate an average model of the normal communication model group belonging to the majority cluster, and notify the network traffic sensor serving as an acquisition source of the normal communication model of attribution information indicating whether or not the normal communication model belongs to the majority cluster and the average model.

Analysis device, analysis system, analysis method, and analysis program

An intrusion prevention device includes a reception unit, a monitoring unit, and a determination unit. The reception unit receives, from a control target device, a notification indicating a state of the control target device. The monitoring unit receives a control command transmitted from a control device to the control target device. The determination unit determines whether to permit or block passage of the control command received by the monitoring unit in accordance with the state of the control target device received by the reception unit.

Intrusion prevention device, intrusion prevention method, and intrusion prevention program

A security measure invalidation prevention device includes an acquisition unit that acquires invalidated security point information about an invalidated security point among security points each having a measure function performing a security measure on a node connected to a network. The invalidated security point has a measure function to be invalidated. The device also includes a determination unit that determines whether a security event to be addressed with the measure function of the invalidated security point is present on the basis of the invalidated security point information acquired by the acquisition unit. The device further includes an extraction unit that extracts a security point to which the measure function of the invalidated security point can be shifted when the determination unit determines that the security event is present.

Security measure invalidation prevention device, security measure invalidation prevention method, and security measure invalidation prevention program

A control device according to the present invention includes: a memory; and processing circuitry coupled to the memory and configured to: detect a state of access to table data stored in a first logical disk of a physical disk and to which first data is written and a state of access to a write ahead log (WAL) stored in a second logical disk of the physical disk and to which second data is written or to a WAL stored in a second storage medium different from the physical disk and to which the second data is written, and acquire an I/O use ratio of the WAL and an I/O use ratio of the table data, and set a writing destination of the second data to one of the WAL stored in the second logical disk and the WAL stored in the second storage medium.

Control device, control method, and recording medium to detect a state of access to table data and set a writing destination

A specifying device receives detection information from a security device that detects hacking into a network or an activity of a terminal related to infection, and specifies a state of the terminal from information of the terminal and content of activity of the terminal included in the detection information. The specifying device specifies, when specifying that the terminal is in the state of being infected with malware, a terminal that may be infected before performing the content of the activity of the terminal included in the detection information based on connection information stored in a configuration information storage device, and specifies a terminal located on a route, along which the infected terminal is likely to be used for hacking or for infection of the terminal in the future, as a candidate for an infected terminal likely to be infected.

Specifying system, specifying device, and specifying method

An optimization apparatus collects cyber attack information that is information related to a cyber attack, and system information that is information related to an entire system including a device that has received the cyber attack. Based on the collected cyber attack information and system information, the optimization apparatus identifies an attack route of the cyber attack, and extracts, as dealing point candidates, devices that are on the attack route and have an effective dealing function against the cyber attack. Subsequently, the optimization apparatus selects a dealing point from the extracted dealing point candidates by using optimization logic that has been set.

Optimization apparatus, optimization method, and optimization program

A light deflectorincludes a reflector (), inner piezoelectric actuators (), an inner frame (), outer piezoelectric actuators (), and an outer frame (). The reflector () is oscillated about a first axis Ua and a second axis Ub by the inner piezoelectric actuators () and the outer piezoelectric actuators (), respectively. Formed on the rear surface of the light deflectoris a projecting rib (), which projects from an encircling rib () of the inner frame () and reaches a corner portion () of a distal end portion of a piezoelectric cantilever (). A vertical side () has an outer recess (). The outer recess () extends along the projecting rib () in a portion of the distal end side of the piezoelectric cantilever ().

Light deflector

A cloud controller performs, when an attack on a VM in any of data centers in a system is detected, setting of NAT of a private IP address of a VM(A), for a boundary router of each data center other than a data center that the VM(A) belongs to, the VM(A) being a victim. Next, the cloud controller performs setting for a redirecting device in the same data center as the VM(A), such that the redirecting device redirects access from a user terminal to a host under a boundary router of any of the respective data centers other than the data center. Thereafter, the cloud controller changes a private IP address of the VM(A) in a NAT setting of a boundary router of the data center to a private IP address of the redirecting device.

Control device, control system, control method, and control program

In a two-dimensional optical deflector apparatus comprising an optical deflector and a driver for driving the optical deflector, the optical deflector includes a mirror, a first piezoelectric actuator for rocking the mirror with respect to a first axis of the mirror, and a second piezoelectric actuator of a meander type for rocking the mirror with respect to a second axis of the mirror perpendicular to the first axis. The driver generates a curved-type saw-tooth drive voltage and applies the curved-type saw-tooth drive voltage to the second piezoelectric actuator.

Two-dimensional optical deflector apparatus using curved-type saw-tooth drive voltages

In an optical deflector including a mirror, a fixed frame, and a piezoelectric actuator connected to the fixed frame for rocking the mirror with respect to an axis of the mirror, at least one piezoelectric sensor is provided on the fixed frame to sense a rocking vibration of the mirror caused by the piezoelectric actuator.

Growing community of inventors

Musashino, Japan

Takaaki Koyama