"Yotsuya Otsuka" provides administrative guidance on personal information management due to former lecturer's SNS posting incident. A former instructor at Yotsuyas Otsukas, a major junior high school entrance exam school, posted the names and addresses of children on SNS.
The Personal Information Protection Commission found that the cram school's management of personal information was inadequate. The cram school handled a large amount of children's personal data, it was poorly managed, and it took approximately two months to report the leak.