Nippon Telegraph and Telephone Corporation

Fumihiro Kanei

Mitsuaki Akiyama

Yuta Takata

Takeshi Yagi

Daiki Chiba

Kunio Hato

Takeshi Yada

A feature extraction unit 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 generates a determiner that determines whether an advertising request is malignant or not by using the calculated feature amount.

Detector, detection method, and detection program

An extracting unit randomly extracts a block from among the blocks of instruction strings constituting the byte code of a first program and, at the time of execution of the first program, extracts the blocks which are invariably executed before the randomly-extracted block. A dividing unit randomly divides, into a plurality of blocks, the instruction strings constituting the byte code of a second program which enables detection of tampering of the first program. An inserting unit inserts the plurality of blocks, which are obtained by division by the dividing unit, at different positions in the block extracted by the extracting unit, while maintaining the execution sequence written in the second program.

Assignment device, assignment method, and assignment program

A static code analysis unit specifies an implementation portion of a Java code in a cooperation mechanism that sends and receives data between an Android application implemented by the Java code and Web content implemented by a JavaScript code and specifies a method in which a return value that can be called by the JavaScript code is set in the cooperation mechanism; a code converting unit inserts, into the Java code, a call code of a simulation function in which the return value of the specified method is inserted into an argument; and a data flow analysis unit analyzes a data flow by observing, by using the argument and the return value of the simulation function and the specified method, the data that is sent and received between the Android application implemented by the Java code and the Web content implemented by the JavaScript code.

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Musashino, Japan

Fumihiro Kanei