City of Osaka security incident history
Hacking, data breaches and other security incidents involving City of Osaka, with related coverage.
Arara breach leaks over 1.07 million Osaka administrative service email addresses
↳ Knock-on damage from the Arara incident · View original incident1.1MImpact: 1,078,713 email addresses belonging to users of the online administrative system, plus email addresses of users and participating merchants in a separate gift certificate program
Unauthorized access to Arara’s external email distribution service resulted in the leak of 1,078,713 email addresses belonging to users of Osaka’s online administrative system. Email addresses of users and participating merchants in a separate gift certificate program were also exposed. The City of Osaka urged residents to watch out for suspicious emails impersonating local governments.
Related reports: 6 · last report →Osaka after-school program may have exposed 415 personal information records
415Impact: Potential exposure of up to 415 personal information records of children and their guardians
Up to 415 personal information records, including the names, schools attended and telephone numbers of children and their guardians, may have been leaked from Osaka’s Ikiiki after-school program. An employee fell victim to a tech support scam, and similar incidents had occurred before.
Related reports: 3 · last report →