Title:
UNAUTHORIZED ACTIVITY DETECTION DEVICE, UNAUTHORIZED ACTIVITY DETECTION METHOD, AND UNAUTHORIZED ACTIVITY DETECTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/062736
Kind Code:
A1
Abstract:
This unauthorized activity detection device comprises: a function extraction unit that refers to a target function list in which functions to be analyzed are described, analyzes an input program, and extracts an analysis target function therefrom; a structure extraction unit that analyzes the program to extract execution paths and condition branches; a condition branch scoring unit that refers to a score list in which probabilities of satisfying conditions of the condition branches are described, and scores each of the extracted condition branches to generate a condition branch score table; an arrival probability calculation unit that, on the basis of the condition branch score table, calculates the probability of arriving at the analysis target function from the scores of the condition branches included in the execution paths; and a backdoor determination unit that provides notification of an execution path having a small arrival probability as an execution path that has a high possibility of being a backdoor execution path.
Inventors:
SHIMADA YUSUKE (JP)
GHATE NAKUL (JP)
TATARA KOHEI (JP)
GHATE NAKUL (JP)
TATARA KOHEI (JP)
Application Number:
PCT/JP2021/037817
Publication Date:
April 20, 2023
Filing Date:
October 13, 2021
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G06F21/57; G06F21/56
Domestic Patent References:
| WO2021028989A1 | 2021-02-18 | |||
| WO2021024476A1 | 2021-02-11 |
Attorney, Agent or Firm:
KATO, Asamichi (JP)
Download PDF:
Previous Patent: VENTILATION SYSTEM AND NOTIFICATION CONTROL METHOD
Next Patent: ULTRASOUND DIAGNOSTIC SYSTEM AND MONITORING METHOD THEREFOR
Next Patent: ULTRASOUND DIAGNOSTIC SYSTEM AND MONITORING METHOD THEREFOR