US 12,445,480 B2
Information management system, information management method, and information sharing system
Katsuya Nishijima, Tokyo (JP); Tomohiro Shigemoto, Tokyo (JP); Nobutaka Kawaguchi, Tokyo (JP); and Yuki Ueki, Tokyo (JP)
Assigned to HITACHI, LTD., Tokyo (JP)
Appl. No. 18/576,130
Filed by Hitachi, Ltd., Tokyo (JP)
PCT Filed Jun. 29, 2022, PCT No. PCT/JP2022/025990
§ 371(c)(1), (2) Date Jan. 3, 2024,
PCT Pub. No. WO2023/282148, PCT Pub. Date Jan. 12, 2023.
Claims priority of application No. 2021-114135 (JP), filed on Jul. 9, 2021.
Prior Publication US 2024/0333748 A1, Oct. 3, 2024
Int. Cl. H04L 9/40 (2022.01)
CPC H04L 63/1433 (2013.01) [H04L 63/1441 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An information management system having a processor and a memory, that when executed by the processor, performs:
receiving, from an information processing apparatus corresponding to a different party, information managed by the different party, calculating a reliability level with respect to the different party, and calculating a confidence level with respect to the information based on the received information and the calculated reliability level;
determining, based on the calculated confidence level, details of a countermeasure process with respect to details indicated by the information; and
changing the reliability level based on the details of the countermeasure process,
wherein
the determining performs, as the countermeasure process with respect to the information, a process for determining whether the information indicates presence of wrongdoing, and
the changing of the reliability level increases the reliability level in a case where it is determined that the information indicates the presence of wrongdoing, and decreases the reliability level in a case where it is determined that the information does not indicate the presence of wrongdoing, and
wherein
the changing of the reliability level increases the reliability level according to a certainty level that is a parameter indicating a degree to which the different party is certain that the information is actually unauthorized, in a case where it is determined that the information indicates the presence of wrongdoing, and decreases the reliability level according to the certainty level in a case where it is determined that the information does not indicate the presence of wrongdoing.