Nec Corporation

Nec Biglobe, Ltd.

Nec Informatec Systems, Ltd.

Naoki Sasamura

Masahiro Suzuki

Yuya Yamada

Takuya Nishio

Takahiro Kakumaru

Go Mase

Takaaki Ohara

Kouki Miyamoto

Yuuji Aoyagi

Takayuki Sugimori

The rule learning unitperforms rough sets analysis using training data that includes threat information including a plurality of explanatory variables representing a threat event and a discrimination result of discriminating the threat information, to learn a decision rule specifying the discrimination result depending on a combination of the explanatory variables. The input unitinputs the threat information to be analyzed. The analysis unitapplies the input threat information to the decision rule to identify the discrimination result of the threat information, and the explanatory variable as a basis for the discrimination result.

Threat analysis system, threat analysis device, threat analysis method and threat analysis program

A user terminal displays on its display unit a target web page including an authentication information input field into which input authentication information is inputted by the user terminal. The user terminal judges first to third validity levels for a plurality of login history information by referring to a login information list and a service group information. The user terminal selects a corresponding process from a plurality of predetermined processes for the input authentication information based on existence or absence of the login history information in the first or second validity level and on a result of checking the input authentication information with login information in the login history information in the first to third validity levels. The user terminal executes the corresponding process.

Web page safety judgment system

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Tokyo, Japan

Naoki Sasamura