公开(公告)号：EP3839780A1

公开(公告)日：2021-06-23

申请号：EP19867456.6

申请日：2019-04-10

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： KANEI, Fumihiro ,  CHIBA, Daiki ,  TAKATA, Yuta ,  AKIYAMA, Mitsuaki ,  HATO, Kunio

IPC分类号： G06F21/55 ,  G06Q30/02

摘要： A feature extraction unit (11) extracts, from an advertising request to view an online advertisement, client information on a client as a transmission source of the advertising request and publisher information on a website of a publisher who displays advertising, and calculates a predetermined feature amount using the client information and the publisher information with respect to a plurality of advertising requests including at least a benign advertising request, and a determiner generation unit (12) generates a determiner (13) that determines whether an advertising request is malignant or not by using the calculated feature amount.

公开(公告)号：EP4030324A1

公开(公告)日：2022-07-20

申请号：EP19948248.0

申请日：2019-10-09

申请人： Nippon Telegraph And Telephone Corporation

发明人： SHIBAHARA, Toshiki ,  KODERA, Hirokazu ,  CHIBA, Daiki ,  AKIYAMA, Mitsuaki ,  HATO, Kunio

IPC分类号： G06F21/55

摘要： A level estimation apparatus (10) receives event logs of events detected by each network device or application. Then, the level estimation apparatus (10) calculates the degrees of similarity among the events, and estimates a level of a predetermined event based on the calculated degrees of similarity among the events and a level of at least one of the events. Here, in the calculation of the degrees of similarity among the events, when calculating a degree of similarity between events detected by different network devices or applications, the level estimation apparatus (10) uses a degree of similarity to a common event, which is an event that has been detected mutually by the different network devices or applications.

公开(公告)号：EP1858212A1

公开(公告)日：2007-11-21

申请号：EP06712655.7

申请日：2006-01-31

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： HATO, Kunio ,  SUZUKI, Muneyoshi

IPC分类号： H04L12/56 ,  H04L12/46

CPC分类号： H04L12/4641 ,  H04L12/56 ,  H04L45/32

摘要： In receiving a MAC (media access control) frame whose destination address is any of a broadcast address, an unknown multicast address and an unknown unicast address, the flooding is reduced by broadcasting the received MAC frame to all the other ports than one that has received the MAC frame. An output control that attains this object is realized by using a destination group identifier (ID) look-up table (2-T1) which enables a look-up of a destination group ID by using, as a key, any one or combination of header information of the MAC frame, a port (2-C) which received the MAC frame and a service VLAN (virtual local area network) ID corresponding to the MAC frame and a backbone port look-up table (2-T2) which enables a look-up of at least one backbone port which is to transmit or at least one backbone port which is not to transmit by using the destination group ID as a key.

摘要翻译： 在接收的MAC（媒体访问控制）帧的目的地址为任何一个广播地址未知的多播地址，并在未知单播地址时，泛洪通过广播接收到的MAC帧的所有其它端口降低超过一个并已收到 该MAC帧。 输出控制没有达到这个目的是通过使用目的地组标识符（ID）查找表（2-T1），可实现通过使用查找一个目的地组ID的，作为密钥，任何一个或组合来实现 报头的MAC帧，端口（2-C）接收到的MAC帧和服务VLAN（虚拟局域网）ID对应于MAC帧和骨干端口查找表（2-T2），使信息 查找至少一个骨干端口所有这一切是发射或至少一个骨干端口所有这不是通过使用目标组ID作为关键字来传输的。

公开(公告)号：EP3144839A1

公开(公告)日：2017-03-22

申请号：EP15819473.8

申请日：2015-07-01

申请人： Nippon Telegraph and Telephone Corporation

发明人： SUDO, Yuichi ,  HATO, Kunio ,  HAMADA, Takahiro ,  UENO, Masami ,  KITAZUME, Hideo

IPC分类号： G06F21/55 ,  G06F13/00

CPC分类号： H04L63/1416 ,  G06F13/00 ,  G06F21/55 ,  H04L9/3247 ,  H04L63/02 ,  H04L63/101

摘要： To provide an unauthorized-access detection device (50) in which when a relationship between information regarding a request transmitted from a terminal operated by a user to a service server (10) that provides a service, which is acquired by a request acquisition unit (31), and information regarding a query transmitted from the service server (10) to a DB (20) that accumulates information regarding the service, which is acquired by a query acquisition unit (41), is different from a normal pattern, a detection unit (51) detects the query as unauthorized access to the DB (20).

摘要翻译： 提供一种未授权访问检测装置（50），其中当从由用户操作的终端发送的请求与提供服务的服务服务器（10）之间的请求之间的关系由请求获取单元（ 31），并且从服务服务器（10）发送到DB（20）的信息与累积关于由查询获取单元（41）获取的服务的信息的信息不同于正常模式，检测 单元（51）将查询检测为对DB（20）的未授权访问。

公开(公告)号：EP3848822A1

公开(公告)日：2021-07-14

申请号：EP19871644.1

申请日：2019-10-07

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： SHIBAHARA, Toshiki ,  CHIBA, Daiki ,  AKIYAMA, Mitsuaki ,  HATO, Kunio

IPC分类号： G06F16/906 ,  G06N20/00

摘要： A data classification device (1) includes: a known data input unit (3) that receives an input of known data, the known data being data already classified into a class and a subclass subordinate to the class; a feature extraction unit (4) that extracts, from features included in the known data, a feature that causes classification of the known data belonging to the same class into a subclass using the feature to fail; and a classification unit (5) that classifies classification target data into a class using the feature extracted by the feature extraction unit (4) .